./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/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_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/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_bee94c6c-325d-4b52-881d-c9f236d43c1c/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 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:37:21,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:37:21,550 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:37:21,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:37:21,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:37:21,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:37:21,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:37:21,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:37:21,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:37:21,623 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:37:21,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:37:21,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:37:21,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:37:21,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:37:21,626 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:37:21,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:37:21,627 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:37:21,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:37:21,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:37:21,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:37:21,627 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:37:21,627 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:37:21,628 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:37:21,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:37:21,628 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:37:21,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:37:21,628 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:37:21,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:37:21,629 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:37:21,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:37:21,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:37:21,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:37:21,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:37:21,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:37:21,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:37:21,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:37:21,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:37:21,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:37:21,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:37:21,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:37:21,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:37:21,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:37:21,631 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_bee94c6c-325d-4b52-881d-c9f236d43c1c/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 -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-13 15:37:22,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:37:22,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:37:22,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:37:22,037 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:37:22,037 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:37:22,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c Unable to find full path for "g++" [2024-11-13 15:37:24,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:37:24,504 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:37:24,505 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-13 15:37:24,520 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/data/d65e79b28/2db77e72629142e49eeccdab35425fa4/FLAG3de406f4a [2024-11-13 15:37:24,739 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/data/d65e79b28/2db77e72629142e49eeccdab35425fa4 [2024-11-13 15:37:24,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:37:24,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:37:24,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:37:24,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:37:24,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:37:24,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:37:24" (1/1) ... [2024-11-13 15:37:24,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6746dece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:24, skipping insertion in model container [2024-11-13 15:37:24,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:37:24" (1/1) ... [2024-11-13 15:37:24,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:37:25,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:37:25,063 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:37:25,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:37:25,107 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:37:25,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25 WrapperNode [2024-11-13 15:37:25,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:37:25,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:37:25,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:37:25,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:37:25,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,159 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 99 [2024-11-13 15:37:25,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:37:25,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:37:25,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:37:25,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:37:25,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,178 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,211 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 15:37:25,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:37:25,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:37:25,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:37:25,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:37:25,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (1/1) ... [2024-11-13 15:37:25,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:37:25,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:37:25,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:37:25,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:37:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:37:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:37:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:37:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:37:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:37:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 15:37:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 15:37:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-13 15:37:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-13 15:37:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:37:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:37:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:37:25,334 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 15:37:25,496 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:37:25,499 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:37:25,837 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:37:25,838 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:37:26,108 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:37:26,108 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 15:37:26,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:37:26 BoogieIcfgContainer [2024-11-13 15:37:26,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:37:26,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:37:26,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:37:26,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:37:26,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:37:24" (1/3) ... [2024-11-13 15:37:26,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4a3c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:37:26, skipping insertion in model container [2024-11-13 15:37:26,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:25" (2/3) ... [2024-11-13 15:37:26,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4a3c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:37:26, skipping insertion in model container [2024-11-13 15:37:26,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:37:26" (3/3) ... [2024-11-13 15:37:26,128 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-13 15:37:26,152 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:37:26,155 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-difference-det.wvr.c that has 5 procedures, 39 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2024-11-13 15:37:26,156 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:37:26,275 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 15:37:26,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-13 15:37:26,392 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-13 15:37:26,395 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 15:37:26,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-13 15:37:26,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-13 15:37:26,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-13 15:37:26,418 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:37:26,443 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;@7c39ab35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:37:26,446 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-13 15:37:26,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:37:26,482 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-13 15:37:26,482 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 15:37:26,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:26,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:26,487 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:26,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:26,497 INFO L85 PathProgramCache]: Analyzing trace with hash -634281848, now seen corresponding path program 1 times [2024-11-13 15:37:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:26,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124738404] [2024-11-13 15:37:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:27,193 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 15:37:27,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:27,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124738404] [2024-11-13 15:37:27,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124738404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:27,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:27,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:37:27,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94863683] [2024-11-13 15:37:27,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:27,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:37:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:27,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:37:27,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:37:27,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-13 15:37:27,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 15:37:27,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:27,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-13 15:37:27,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:28,498 INFO L124 PetriNetUnfolderBase]: 4206/5681 cut-off events. [2024-11-13 15:37:28,499 INFO L125 PetriNetUnfolderBase]: For 467/467 co-relation queries the response was YES. [2024-11-13 15:37:28,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11669 conditions, 5681 events. 4206/5681 cut-off events. For 467/467 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24037 event pairs, 1080 based on Foata normal form. 2/5292 useless extension candidates. Maximal degree in co-relation 10306. Up to 4714 conditions per place. [2024-11-13 15:37:28,577 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-13 15:37:28,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-13 15:37:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:37:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:37:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-13 15:37:28,599 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-13 15:37:28,601 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 81 transitions. [2024-11-13 15:37:28,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-13 15:37:28,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 15:37:28,629 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-13 15:37:28,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-13 15:37:28,643 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-13 15:37:28,643 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-13 15:37:28,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 15:37:28,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:28,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:28,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:37:28,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:28,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:28,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1260973729, now seen corresponding path program 1 times [2024-11-13 15:37:28,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:28,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455212969] [2024-11-13 15:37:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:28,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:29,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:29,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455212969] [2024-11-13 15:37:29,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455212969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:29,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:37:29,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874245977] [2024-11-13 15:37:29,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:29,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:37:29,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:29,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:37:29,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:37:29,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 15:37:29,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:37:29,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:29,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 15:37:29,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:30,613 INFO L124 PetriNetUnfolderBase]: 8195/10841 cut-off events. [2024-11-13 15:37:30,613 INFO L125 PetriNetUnfolderBase]: For 1314/1329 co-relation queries the response was YES. [2024-11-13 15:37:30,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24073 conditions, 10841 events. 8195/10841 cut-off events. For 1314/1329 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 50863 event pairs, 2840 based on Foata normal form. 84/10387 useless extension candidates. Maximal degree in co-relation 3435. Up to 6644 conditions per place. [2024-11-13 15:37:30,697 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 95 selfloop transitions, 7 changer transitions 0/104 dead transitions. [2024-11-13 15:37:30,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 104 transitions, 480 flow [2024-11-13 15:37:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:37:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:37:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-13 15:37:30,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-13 15:37:30,700 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 132 transitions. [2024-11-13 15:37:30,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 104 transitions, 480 flow [2024-11-13 15:37:30,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 104 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:37:30,707 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 146 flow [2024-11-13 15:37:30,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-13 15:37:30,709 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-13 15:37:30,709 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 146 flow [2024-11-13 15:37:30,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:37:30,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:30,710 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:30,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:37:30,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:30,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:30,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1788404171, now seen corresponding path program 2 times [2024-11-13 15:37:30,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:30,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145128093] [2024-11-13 15:37:30,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:30,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:30,929 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 15:37:30,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:30,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145128093] [2024-11-13 15:37:30,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145128093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:37:30,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481683784] [2024-11-13 15:37:30,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:37:30,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:30,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:37:30,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:37:30,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:37:31,071 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:37:31,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:37:31,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:37:31,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:37:31,185 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 15:37:31,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:37:31,277 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 15:37:31,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481683784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:37:31,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:37:31,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-13 15:37:31,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32206281] [2024-11-13 15:37:31,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:37:31,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:37:31,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:37:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:37:31,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-13 15:37:31,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 146 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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 15:37:31,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:31,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-13 15:37:31,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:34,357 INFO L124 PetriNetUnfolderBase]: 14186/18559 cut-off events. [2024-11-13 15:37:34,358 INFO L125 PetriNetUnfolderBase]: For 5632/5632 co-relation queries the response was YES. [2024-11-13 15:37:34,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47436 conditions, 18559 events. 14186/18559 cut-off events. For 5632/5632 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 88974 event pairs, 1103 based on Foata normal form. 270/18337 useless extension candidates. Maximal degree in co-relation 27216. Up to 3407 conditions per place. [2024-11-13 15:37:34,489 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 244 selfloop transitions, 28 changer transitions 0/273 dead transitions. [2024-11-13 15:37:34,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 273 transitions, 1315 flow [2024-11-13 15:37:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:37:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:37:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 351 transitions. [2024-11-13 15:37:34,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5969387755102041 [2024-11-13 15:37:34,499 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 146 flow. Second operand 14 states and 351 transitions. [2024-11-13 15:37:34,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 273 transitions, 1315 flow [2024-11-13 15:37:34,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 273 transitions, 1315 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:37:34,526 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 309 flow [2024-11-13 15:37:34,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=309, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-11-13 15:37:34,529 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-11-13 15:37:34,530 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 309 flow [2024-11-13 15:37:34,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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 15:37:34,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:34,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:34,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 15:37:34,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:34,732 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:34,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1234169787, now seen corresponding path program 3 times [2024-11-13 15:37:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:34,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673599916] [2024-11-13 15:37:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:34,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:34,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673599916] [2024-11-13 15:37:34,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673599916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:34,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:34,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:37:34,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123654259] [2024-11-13 15:37:34,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:34,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:37:34,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:34,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:37:34,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:37:34,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 15:37:34,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:37:34,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:34,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 15:37:34,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:37,700 INFO L124 PetriNetUnfolderBase]: 17994/23929 cut-off events. [2024-11-13 15:37:37,700 INFO L125 PetriNetUnfolderBase]: For 31389/31446 co-relation queries the response was YES. [2024-11-13 15:37:37,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70589 conditions, 23929 events. 17994/23929 cut-off events. For 31389/31446 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 122203 event pairs, 6850 based on Foata normal form. 24/23857 useless extension candidates. Maximal degree in co-relation 52742. Up to 12912 conditions per place. [2024-11-13 15:37:37,890 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 103 selfloop transitions, 13 changer transitions 10/135 dead transitions. [2024-11-13 15:37:37,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 135 transitions, 854 flow [2024-11-13 15:37:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:37:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:37:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-13 15:37:37,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-13 15:37:37,892 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 309 flow. Second operand 5 states and 123 transitions. [2024-11-13 15:37:37,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 135 transitions, 854 flow [2024-11-13 15:37:38,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 135 transitions, 795 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-13 15:37:38,713 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 364 flow [2024-11-13 15:37:38,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=364, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2024-11-13 15:37:38,714 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-11-13 15:37:38,714 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 364 flow [2024-11-13 15:37:38,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:37:38,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:38,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:38,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:37:38,715 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:38,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:38,715 INFO L85 PathProgramCache]: Analyzing trace with hash 387733073, now seen corresponding path program 1 times [2024-11-13 15:37:38,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:38,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379724045] [2024-11-13 15:37:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:38,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:38,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:38,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379724045] [2024-11-13 15:37:38,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379724045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:38,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:38,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:37:38,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44850235] [2024-11-13 15:37:38,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:38,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:37:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:38,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:37:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:37:38,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 15:37:38,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 364 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:37:38,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:38,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 15:37:38,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:40,578 INFO L124 PetriNetUnfolderBase]: 16684/22020 cut-off events. [2024-11-13 15:37:40,578 INFO L125 PetriNetUnfolderBase]: For 29621/30361 co-relation queries the response was YES. [2024-11-13 15:37:40,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66733 conditions, 22020 events. 16684/22020 cut-off events. For 29621/30361 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 110341 event pairs, 5764 based on Foata normal form. 36/22053 useless extension candidates. Maximal degree in co-relation 49219. Up to 13086 conditions per place. [2024-11-13 15:37:40,712 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 106 selfloop transitions, 7 changer transitions 16/133 dead transitions. [2024-11-13 15:37:40,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 133 transitions, 856 flow [2024-11-13 15:37:40,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:37:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:37:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-13 15:37:40,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-11-13 15:37:40,713 INFO L175 Difference]: Start difference. First operand has 66 places, 70 transitions, 364 flow. Second operand 5 states and 131 transitions. [2024-11-13 15:37:40,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 133 transitions, 856 flow [2024-11-13 15:37:41,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 133 transitions, 819 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-13 15:37:41,240 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 364 flow [2024-11-13 15:37:41,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=364, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-11-13 15:37:41,241 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-13 15:37:41,241 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 364 flow [2024-11-13 15:37:41,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:37:41,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:41,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:41,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:37:41,242 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:41,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:41,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1057076727, now seen corresponding path program 4 times [2024-11-13 15:37:41,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:41,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537124413] [2024-11-13 15:37:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:41,425 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 15:37:41,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537124413] [2024-11-13 15:37:41,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537124413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:37:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189614473] [2024-11-13 15:37:41,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:37:41,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:41,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:37:41,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:37:41,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:37:41,551 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:37:41,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:37:41,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:37:41,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:37:41,655 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 15:37:41,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:37:41,709 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 15:37:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189614473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:37:41,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:37:41,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-13 15:37:41,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472122971] [2024-11-13 15:37:41,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:37:41,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:37:41,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:37:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:37:41,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-13 15:37:41,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 364 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 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 15:37:41,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:41,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-13 15:37:41,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:44,548 INFO L124 PetriNetUnfolderBase]: 23072/30069 cut-off events. [2024-11-13 15:37:44,548 INFO L125 PetriNetUnfolderBase]: For 44817/44817 co-relation queries the response was YES. [2024-11-13 15:37:44,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89558 conditions, 30069 events. 23072/30069 cut-off events. For 44817/44817 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 145622 event pairs, 5323 based on Foata normal form. 438/30507 useless extension candidates. Maximal degree in co-relation 78286. Up to 10121 conditions per place. [2024-11-13 15:37:44,682 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 155 selfloop transitions, 44 changer transitions 0/200 dead transitions. [2024-11-13 15:37:44,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 200 transitions, 1253 flow [2024-11-13 15:37:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:37:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:37:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-11-13 15:37:44,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-11-13 15:37:44,684 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 364 flow. Second operand 8 states and 201 transitions. [2024-11-13 15:37:44,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 200 transitions, 1253 flow [2024-11-13 15:37:44,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 200 transitions, 1216 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-13 15:37:44,928 INFO L231 Difference]: Finished difference. Result has 77 places, 91 transitions, 637 flow [2024-11-13 15:37:44,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=77, PETRI_TRANSITIONS=91} [2024-11-13 15:37:44,929 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-11-13 15:37:44,929 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 91 transitions, 637 flow [2024-11-13 15:37:44,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 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 15:37:44,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:44,929 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:44,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:37:45,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:45,134 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:45,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:45,134 INFO L85 PathProgramCache]: Analyzing trace with hash -422461869, now seen corresponding path program 2 times [2024-11-13 15:37:45,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:45,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997539091] [2024-11-13 15:37:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:45,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:45,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:45,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997539091] [2024-11-13 15:37:45,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997539091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:45,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:45,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:37:45,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307601412] [2024-11-13 15:37:45,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:45,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:37:45,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:45,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:37:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:37:45,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 15:37:45,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 91 transitions, 637 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:37:45,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:45,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 15:37:45,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:47,934 INFO L124 PetriNetUnfolderBase]: 22029/29151 cut-off events. [2024-11-13 15:37:47,935 INFO L125 PetriNetUnfolderBase]: For 50852/51730 co-relation queries the response was YES. [2024-11-13 15:37:48,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95247 conditions, 29151 events. 22029/29151 cut-off events. For 50852/51730 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 152040 event pairs, 2533 based on Foata normal form. 240/29386 useless extension candidates. Maximal degree in co-relation 80942. Up to 10004 conditions per place. [2024-11-13 15:37:48,104 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 159 selfloop transitions, 37 changer transitions 1/202 dead transitions. [2024-11-13 15:37:48,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 202 transitions, 1460 flow [2024-11-13 15:37:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:37:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:37:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-11-13 15:37:48,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-13 15:37:48,107 INFO L175 Difference]: Start difference. First operand has 77 places, 91 transitions, 637 flow. Second operand 7 states and 183 transitions. [2024-11-13 15:37:48,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 202 transitions, 1460 flow [2024-11-13 15:37:48,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 202 transitions, 1419 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-13 15:37:48,757 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 766 flow [2024-11-13 15:37:48,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=766, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2024-11-13 15:37:48,758 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-11-13 15:37:48,758 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 766 flow [2024-11-13 15:37:48,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:37:48,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:48,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:48,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:37:48,759 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:48,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1138061579, now seen corresponding path program 5 times [2024-11-13 15:37:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:48,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137376821] [2024-11-13 15:37:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:48,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:48,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:48,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137376821] [2024-11-13 15:37:48,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137376821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:48,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:48,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:37:48,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212831164] [2024-11-13 15:37:48,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:48,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:37:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:37:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:37:48,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-13 15:37:48,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 766 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:37:48,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:48,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-13 15:37:48,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:52,124 INFO L124 PetriNetUnfolderBase]: 26318/34323 cut-off events. [2024-11-13 15:37:52,124 INFO L125 PetriNetUnfolderBase]: For 76158/76158 co-relation queries the response was YES. [2024-11-13 15:37:52,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115194 conditions, 34323 events. 26318/34323 cut-off events. For 76158/76158 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 172005 event pairs, 9787 based on Foata normal form. 168/34491 useless extension candidates. Maximal degree in co-relation 103248. Up to 22083 conditions per place. [2024-11-13 15:37:52,311 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 127 selfloop transitions, 29 changer transitions 0/157 dead transitions. [2024-11-13 15:37:52,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 157 transitions, 1303 flow [2024-11-13 15:37:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:37:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:37:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-13 15:37:52,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-13 15:37:52,314 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 766 flow. Second operand 5 states and 130 transitions. [2024-11-13 15:37:52,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 157 transitions, 1303 flow [2024-11-13 15:37:52,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 157 transitions, 1266 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-13 15:37:52,699 INFO L231 Difference]: Finished difference. Result has 90 places, 104 transitions, 913 flow [2024-11-13 15:37:52,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=913, PETRI_PLACES=90, PETRI_TRANSITIONS=104} [2024-11-13 15:37:52,700 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 44 predicate places. [2024-11-13 15:37:52,700 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 104 transitions, 913 flow [2024-11-13 15:37:52,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:37:52,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:52,700 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:52,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:37:52,701 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:52,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:52,701 INFO L85 PathProgramCache]: Analyzing trace with hash -642486185, now seen corresponding path program 3 times [2024-11-13 15:37:52,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:52,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686413974] [2024-11-13 15:37:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:52,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:52,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686413974] [2024-11-13 15:37:52,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686413974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:37:52,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686815071] [2024-11-13 15:37:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:52,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:37:52,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:37:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:37:52,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-13 15:37:52,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 104 transitions, 913 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 15:37:52,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:52,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-13 15:37:52,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:56,108 INFO L124 PetriNetUnfolderBase]: 27138/35383 cut-off events. [2024-11-13 15:37:56,109 INFO L125 PetriNetUnfolderBase]: For 92014/92014 co-relation queries the response was YES. [2024-11-13 15:37:56,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122172 conditions, 35383 events. 27138/35383 cut-off events. For 92014/92014 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 177849 event pairs, 9787 based on Foata normal form. 240/35623 useless extension candidates. Maximal degree in co-relation 109768. Up to 22083 conditions per place. [2024-11-13 15:37:56,319 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 142 selfloop transitions, 31 changer transitions 0/174 dead transitions. [2024-11-13 15:37:56,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 174 transitions, 1465 flow [2024-11-13 15:37:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:37:56,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:37:56,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-11-13 15:37:56,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-13 15:37:56,321 INFO L175 Difference]: Start difference. First operand has 90 places, 104 transitions, 913 flow. Second operand 6 states and 150 transitions. [2024-11-13 15:37:56,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 174 transitions, 1465 flow [2024-11-13 15:37:56,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 1421 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-13 15:37:56,835 INFO L231 Difference]: Finished difference. Result has 95 places, 106 transitions, 964 flow [2024-11-13 15:37:56,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=964, PETRI_PLACES=95, PETRI_TRANSITIONS=106} [2024-11-13 15:37:56,836 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2024-11-13 15:37:56,837 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 106 transitions, 964 flow [2024-11-13 15:37:56,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 15:37:56,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:37:56,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:56,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:37:56,837 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:37:56,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:56,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1157239623, now seen corresponding path program 6 times [2024-11-13 15:37:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:56,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764920675] [2024-11-13 15:37:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:56,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:56,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:56,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764920675] [2024-11-13 15:37:56,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764920675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:56,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:56,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:37:56,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190403850] [2024-11-13 15:37:56,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:56,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:37:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:37:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:37:56,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 15:37:56,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 106 transitions, 964 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:37:56,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:37:56,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 15:37:56,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:37:59,881 INFO L124 PetriNetUnfolderBase]: 24283/32322 cut-off events. [2024-11-13 15:37:59,882 INFO L125 PetriNetUnfolderBase]: For 104761/105164 co-relation queries the response was YES. [2024-11-13 15:38:00,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114332 conditions, 32322 events. 24283/32322 cut-off events. For 104761/105164 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 174058 event pairs, 9143 based on Foata normal form. 39/32163 useless extension candidates. Maximal degree in co-relation 104295. Up to 19901 conditions per place. [2024-11-13 15:38:00,216 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 101 selfloop transitions, 25 changer transitions 9/153 dead transitions. [2024-11-13 15:38:00,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 153 transitions, 1378 flow [2024-11-13 15:38:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:38:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:38:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-13 15:38:00,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-11-13 15:38:00,217 INFO L175 Difference]: Start difference. First operand has 95 places, 106 transitions, 964 flow. Second operand 5 states and 122 transitions. [2024-11-13 15:38:00,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 153 transitions, 1378 flow [2024-11-13 15:38:00,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 153 transitions, 1317 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-13 15:38:00,702 INFO L231 Difference]: Finished difference. Result has 97 places, 105 transitions, 942 flow [2024-11-13 15:38:00,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=942, PETRI_PLACES=97, PETRI_TRANSITIONS=105} [2024-11-13 15:38:00,703 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2024-11-13 15:38:00,703 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 105 transitions, 942 flow [2024-11-13 15:38:00,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:38:00,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:38:00,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:00,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:38:00,704 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:38:00,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash -574070325, now seen corresponding path program 7 times [2024-11-13 15:38:00,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:00,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516779649] [2024-11-13 15:38:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:00,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:00,811 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 15:38:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516779649] [2024-11-13 15:38:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516779649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:38:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863244288] [2024-11-13 15:38:00,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:38:00,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:38:00,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:38:00,815 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:38:00,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:38:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:00,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:38:00,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:38:00,979 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 15:38:00,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:38:01,029 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 15:38:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863244288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:38:01,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:38:01,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-13 15:38:01,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832269690] [2024-11-13 15:38:01,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:38:01,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:38:01,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:38:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:38:01,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:38:01,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-13 15:38:01,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 105 transitions, 942 flow. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:38:01,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:38:01,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-13 15:38:01,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:38:05,326 INFO L124 PetriNetUnfolderBase]: 31829/41604 cut-off events. [2024-11-13 15:38:05,326 INFO L125 PetriNetUnfolderBase]: For 105933/105933 co-relation queries the response was YES. [2024-11-13 15:38:05,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141499 conditions, 41604 events. 31829/41604 cut-off events. For 105933/105933 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 216177 event pairs, 2501 based on Foata normal form. 270/41874 useless extension candidates. Maximal degree in co-relation 129864. Up to 8142 conditions per place. [2024-11-13 15:38:05,633 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 259 selfloop transitions, 73 changer transitions 1/334 dead transitions. [2024-11-13 15:38:05,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 334 transitions, 2308 flow [2024-11-13 15:38:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:38:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 15:38:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 374 transitions. [2024-11-13 15:38:05,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5936507936507937 [2024-11-13 15:38:05,636 INFO L175 Difference]: Start difference. First operand has 97 places, 105 transitions, 942 flow. Second operand 15 states and 374 transitions. [2024-11-13 15:38:05,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 334 transitions, 2308 flow [2024-11-13 15:38:06,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 334 transitions, 2256 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 15:38:06,490 INFO L231 Difference]: Finished difference. Result has 109 places, 118 transitions, 1183 flow [2024-11-13 15:38:06,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1183, PETRI_PLACES=109, PETRI_TRANSITIONS=118} [2024-11-13 15:38:06,491 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-11-13 15:38:06,491 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 118 transitions, 1183 flow [2024-11-13 15:38:06,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:38:06,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:38:06,491 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:06,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:38:06,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee94c6c-325d-4b52-881d-c9f236d43c1c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:38:06,692 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:38:06,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1095679133, now seen corresponding path program 4 times [2024-11-13 15:38:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153262584] [2024-11-13 15:38:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:38:06,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:06,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153262584] [2024-11-13 15:38:06,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153262584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:38:06,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:38:06,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:38:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482279559] [2024-11-13 15:38:06,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:38:06,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:38:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:38:06,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:38:06,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:38:06,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 15:38:06,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 118 transitions, 1183 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:38:06,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:38:06,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 15:38:06,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:38:10,370 INFO L124 PetriNetUnfolderBase]: 28180/37476 cut-off events. [2024-11-13 15:38:10,370 INFO L125 PetriNetUnfolderBase]: For 121107/121767 co-relation queries the response was YES. [2024-11-13 15:38:10,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134287 conditions, 37476 events. 28180/37476 cut-off events. For 121107/121767 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 205183 event pairs, 10371 based on Foata normal form. 36/37449 useless extension candidates. Maximal degree in co-relation 122353. Up to 24954 conditions per place. [2024-11-13 15:38:11,038 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 121 selfloop transitions, 24 changer transitions 10/165 dead transitions. [2024-11-13 15:38:11,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 165 transitions, 1618 flow [2024-11-13 15:38:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:38:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:38:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-13 15:38:11,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-11-13 15:38:11,040 INFO L175 Difference]: Start difference. First operand has 109 places, 118 transitions, 1183 flow. Second operand 5 states and 122 transitions. [2024-11-13 15:38:11,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 165 transitions, 1618 flow [2024-11-13 15:38:11,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 165 transitions, 1554 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-13 15:38:11,693 INFO L231 Difference]: Finished difference. Result has 107 places, 117 transitions, 1156 flow [2024-11-13 15:38:11,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1156, PETRI_PLACES=107, PETRI_TRANSITIONS=117} [2024-11-13 15:38:11,694 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2024-11-13 15:38:11,694 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 117 transitions, 1156 flow [2024-11-13 15:38:11,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:38:11,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:38:11,695 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:11,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:38:11,695 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:38:11,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1193838015, now seen corresponding path program 5 times [2024-11-13 15:38:11,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:11,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771547102] [2024-11-13 15:38:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:38:11,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:11,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771547102] [2024-11-13 15:38:11,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771547102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:38:11,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:38:11,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:38:11,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256328102] [2024-11-13 15:38:11,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:38:11,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:38:11,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:38:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:38:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:38:11,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-13 15:38:11,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 1156 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 15:38:11,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:38:11,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-13 15:38:11,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:38:15,688 INFO L124 PetriNetUnfolderBase]: 34766/45477 cut-off events. [2024-11-13 15:38:15,688 INFO L125 PetriNetUnfolderBase]: For 148615/148615 co-relation queries the response was YES. [2024-11-13 15:38:15,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161452 conditions, 45477 events. 34766/45477 cut-off events. For 148615/148615 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 236633 event pairs, 10684 based on Foata normal form. 240/45717 useless extension candidates. Maximal degree in co-relation 134706. Up to 19176 conditions per place. [2024-11-13 15:38:16,378 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 157 selfloop transitions, 37 changer transitions 1/196 dead transitions. [2024-11-13 15:38:16,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 196 transitions, 1857 flow [2024-11-13 15:38:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:38:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:38:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-11-13 15:38:16,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-13 15:38:16,379 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 1156 flow. Second operand 6 states and 152 transitions. [2024-11-13 15:38:16,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 196 transitions, 1857 flow [2024-11-13 15:38:17,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 196 transitions, 1801 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 15:38:17,379 INFO L231 Difference]: Finished difference. Result has 109 places, 120 transitions, 1237 flow [2024-11-13 15:38:17,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1237, PETRI_PLACES=109, PETRI_TRANSITIONS=120} [2024-11-13 15:38:17,380 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-11-13 15:38:17,380 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 120 transitions, 1237 flow [2024-11-13 15:38:17,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 15:38:17,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:38:17,380 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:17,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:38:17,380 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:38:17,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1064781877, now seen corresponding path program 8 times [2024-11-13 15:38:17,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:17,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222270594] [2024-11-13 15:38:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:38:17,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:17,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222270594] [2024-11-13 15:38:17,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222270594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:38:17,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:38:17,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:38:17,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214803002] [2024-11-13 15:38:17,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:38:17,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:38:17,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:38:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:38:17,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:38:17,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 15:38:17,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 120 transitions, 1237 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:38:17,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:38:17,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 15:38:17,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:38:20,255 INFO L124 PetriNetUnfolderBase]: 30798/40595 cut-off events. [2024-11-13 15:38:20,255 INFO L125 PetriNetUnfolderBase]: For 154760/155020 co-relation queries the response was YES. [2024-11-13 15:38:20,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146311 conditions, 40595 events. 30798/40595 cut-off events. For 154760/155020 co-relation queries the response was YES. Maximal size of possible extension queue 1619. Compared 218908 event pairs, 11185 based on Foata normal form. 24/40460 useless extension candidates. Maximal degree in co-relation 122512. Up to 21014 conditions per place. [2024-11-13 15:38:20,515 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 109 selfloop transitions, 29 changer transitions 8/166 dead transitions. [2024-11-13 15:38:20,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 1671 flow [2024-11-13 15:38:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:38:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:38:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-13 15:38:20,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-11-13 15:38:20,517 INFO L175 Difference]: Start difference. First operand has 109 places, 120 transitions, 1237 flow. Second operand 5 states and 118 transitions. [2024-11-13 15:38:20,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 1671 flow [2024-11-13 15:38:21,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 166 transitions, 1612 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-13 15:38:21,891 INFO L231 Difference]: Finished difference. Result has 111 places, 119 transitions, 1228 flow [2024-11-13 15:38:21,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1228, PETRI_PLACES=111, PETRI_TRANSITIONS=119} [2024-11-13 15:38:21,892 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 65 predicate places. [2024-11-13 15:38:21,892 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 119 transitions, 1228 flow [2024-11-13 15:38:21,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:38:21,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:38:21,893 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:21,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:38:21,893 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 15:38:21,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:21,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1937025495, now seen corresponding path program 6 times [2024-11-13 15:38:21,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:21,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912232618] [2024-11-13 15:38:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:21,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:38:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:21,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912232618] [2024-11-13 15:38:21,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912232618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:38:21,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:38:21,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:38:21,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254249537] [2024-11-13 15:38:21,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:38:21,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:38:21,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:38:21,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:38:21,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:38:22,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 15:38:22,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 119 transitions, 1228 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 15:38:22,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:38:22,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 15:38:22,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand