./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB --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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:16:51,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:16:51,185 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:16:51,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:16:51,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:16:51,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:16:51,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:16:51,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:16:51,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:16:51,222 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:16:51,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:16:51,222 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:16:51,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:16:51,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:16:51,223 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:16:51,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:16:51,223 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:16:51,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:16:51,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:16:51,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:16:51,224 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:16:51,224 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:16:51,224 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:16:51,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:16:51,224 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:16:51,225 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:16:51,225 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:16:51,225 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:16:51,225 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:16:51,225 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:16:51,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:16:51,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:16:51,226 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:16:51,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:16:51,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:16:51,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:16:51,226 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:16:51,226 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:16:51,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:16:51,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:16:51,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:16:51,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:16:51,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:16:51,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:16:51,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:16:51,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:16:51,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:16:51,227 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_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB 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 -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-28 05:16:51,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:16:51,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:16:51,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:16:51,527 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:16:51,527 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:16:51,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-28 05:16:54,621 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/data/803861c3e/84dcdb2e0f094b26ac34d4eccd0947e4/FLAG59ec126b7 [2024-11-28 05:16:54,924 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:16:54,929 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-28 05:16:54,954 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/data/803861c3e/84dcdb2e0f094b26ac34d4eccd0947e4/FLAG59ec126b7 [2024-11-28 05:16:55,194 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/data/803861c3e/84dcdb2e0f094b26ac34d4eccd0947e4 [2024-11-28 05:16:55,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:16:55,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:16:55,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:16:55,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:16:55,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:16:55,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccd4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55, skipping insertion in model container [2024-11-28 05:16:55,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,222 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:16:55,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:16:55,470 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:16:55,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:16:55,521 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:16:55,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55 WrapperNode [2024-11-28 05:16:55,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:16:55,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:16:55,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:16:55,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:16:55,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,572 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2024-11-28 05:16:55,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:16:55,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:16:55,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:16:55,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:16:55,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,606 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]. [2024-11-28 05:16:55,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,620 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:16:55,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:16:55,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:16:55,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:16:55,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (1/1) ... [2024-11-28 05:16:55,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:16:55,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:55,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:16:55,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:16:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:16:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:16:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:16:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:16:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:16:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:16:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:16:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:16:55,736 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:16:55,849 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:16:55,852 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:16:56,074 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:16:56,074 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:16:56,218 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:16:56,218 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:16:56,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:16:56 BoogieIcfgContainer [2024-11-28 05:16:56,219 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:16:56,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:16:56,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:16:56,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:16:56,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:16:55" (1/3) ... [2024-11-28 05:16:56,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616c3908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:16:56, skipping insertion in model container [2024-11-28 05:16:56,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:55" (2/3) ... [2024-11-28 05:16:56,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616c3908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:16:56, skipping insertion in model container [2024-11-28 05:16:56,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:16:56" (3/3) ... [2024-11-28 05:16:56,231 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-28 05:16:56,250 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:16:56,252 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-figure1.wvr.c that has 3 procedures, 23 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-28 05:16:56,252 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:16:56,338 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 05:16:56,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-11-28 05:16:56,439 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-28 05:16:56,445 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:16:56,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-28 05:16:56,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-11-28 05:16:56,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-11-28 05:16:56,478 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:16:56,497 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;@6e435176, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:16:56,497 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 05:16:56,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:16:56,509 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-28 05:16:56,509 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:16:56,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:56,510 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:56,511 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:16:56,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:56,518 INFO L85 PathProgramCache]: Analyzing trace with hash -971144275, now seen corresponding path program 1 times [2024-11-28 05:16:56,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:56,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674819978] [2024-11-28 05:16:56,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:56,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:56,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674819978] [2024-11-28 05:16:56,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674819978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:56,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:56,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:16:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953874329] [2024-11-28 05:16:56,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:56,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:16:56,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:56,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:16:56,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:16:56,809 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 05:16:56,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-28 05:16:56,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:56,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 05:16:56,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:57,025 INFO L124 PetriNetUnfolderBase]: 86/169 cut-off events. [2024-11-28 05:16:57,025 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-28 05:16:57,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 169 events. 86/169 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 504 event pairs, 32 based on Foata normal form. 2/163 useless extension candidates. Maximal degree in co-relation 298. Up to 108 conditions per place. [2024-11-28 05:16:57,029 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-28 05:16:57,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-28 05:16:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:16:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:16:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-28 05:16:57,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-28 05:16:57,049 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 44 transitions. [2024-11-28 05:16:57,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-28 05:16:57,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:16:57,057 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-28 05:16:57,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-28 05:16:57,065 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-11-28 05:16:57,065 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-28 05:16:57,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-28 05:16:57,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:57,065 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:57,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:16:57,066 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:16:57,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:57,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2100203252, now seen corresponding path program 1 times [2024-11-28 05:16:57,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:57,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019469738] [2024-11-28 05:16:57,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:57,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:57,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:57,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019469738] [2024-11-28 05:16:57,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019469738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:57,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:57,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:16:57,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762288255] [2024-11-28 05:16:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:57,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:16:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:57,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:16:57,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:16:57,347 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:16:57,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-28 05:16:57,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:57,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:16:57,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:57,589 INFO L124 PetriNetUnfolderBase]: 139/252 cut-off events. [2024-11-28 05:16:57,589 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-28 05:16:57,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 252 events. 139/252 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 885 event pairs, 59 based on Foata normal form. 4/236 useless extension candidates. Maximal degree in co-relation 179. Up to 181 conditions per place. [2024-11-28 05:16:57,593 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 34 selfloop transitions, 6 changer transitions 1/42 dead transitions. [2024-11-28 05:16:57,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 42 transitions, 191 flow [2024-11-28 05:16:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:16:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:16:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-28 05:16:57,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-28 05:16:57,598 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 62 transitions. [2024-11-28 05:16:57,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 42 transitions, 191 flow [2024-11-28 05:16:57,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 42 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:16:57,601 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 97 flow [2024-11-28 05:16:57,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-11-28 05:16:57,603 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-11-28 05:16:57,604 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 97 flow [2024-11-28 05:16:57,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-28 05:16:57,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:57,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:57,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:16:57,604 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:16:57,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:57,607 INFO L85 PathProgramCache]: Analyzing trace with hash 422699980, now seen corresponding path program 2 times [2024-11-28 05:16:57,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:57,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768918767] [2024-11-28 05:16:57,607 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:16:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:57,650 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:16:57,654 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:57,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:57,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768918767] [2024-11-28 05:16:57,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768918767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:57,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075115567] [2024-11-28 05:16:57,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:16:57,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:57,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:57,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:57,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:16:57,927 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:16:57,927 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:57,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:16:57,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:58,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:58,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075115567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:16:58,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:16:58,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 05:16:58,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697887027] [2024-11-28 05:16:58,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:58,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:16:58,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:58,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:16:58,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:16:58,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:16:58,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 97 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 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) [2024-11-28 05:16:58,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:58,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:16:58,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:58,599 INFO L124 PetriNetUnfolderBase]: 167/295 cut-off events. [2024-11-28 05:16:58,599 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-11-28 05:16:58,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 295 events. 167/295 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1001 event pairs, 2 based on Foata normal form. 9/286 useless extension candidates. Maximal degree in co-relation 567. Up to 65 conditions per place. [2024-11-28 05:16:58,603 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 55 selfloop transitions, 20 changer transitions 0/76 dead transitions. [2024-11-28 05:16:58,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 76 transitions, 408 flow [2024-11-28 05:16:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:16:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:16:58,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-11-28 05:16:58,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-11-28 05:16:58,606 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 97 flow. Second operand 12 states and 125 transitions. [2024-11-28 05:16:58,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 76 transitions, 408 flow [2024-11-28 05:16:58,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 76 transitions, 406 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 05:16:58,612 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 222 flow [2024-11-28 05:16:58,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=222, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-28 05:16:58,613 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-11-28 05:16:58,613 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 222 flow [2024-11-28 05:16:58,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 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) [2024-11-28 05:16:58,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:58,614 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:58,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:16:58,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:58,819 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:16:58,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash -252715444, now seen corresponding path program 3 times [2024-11-28 05:16:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:58,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248167761] [2024-11-28 05:16:58,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:16:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:58,838 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:16:58,838 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:58,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:58,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248167761] [2024-11-28 05:16:58,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248167761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:58,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:58,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:16:58,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982641552] [2024-11-28 05:16:58,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:58,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:16:58,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:58,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:16:58,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:16:58,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:16:58,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-28 05:16:58,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:58,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:16:58,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:59,152 INFO L124 PetriNetUnfolderBase]: 230/407 cut-off events. [2024-11-28 05:16:59,153 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2024-11-28 05:16:59,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 407 events. 230/407 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1466 event pairs, 69 based on Foata normal form. 2/409 useless extension candidates. Maximal degree in co-relation 1054. Up to 192 conditions per place. [2024-11-28 05:16:59,163 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 56 selfloop transitions, 11 changer transitions 2/70 dead transitions. [2024-11-28 05:16:59,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 540 flow [2024-11-28 05:16:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:16:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:16:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-28 05:16:59,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 05:16:59,167 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 222 flow. Second operand 5 states and 60 transitions. [2024-11-28 05:16:59,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 540 flow [2024-11-28 05:16:59,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 494 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-28 05:16:59,183 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 264 flow [2024-11-28 05:16:59,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-11-28 05:16:59,185 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-11-28 05:16:59,186 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 264 flow [2024-11-28 05:16:59,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-28 05:16:59,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:59,186 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:59,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:16:59,187 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:16:59,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash 32847164, now seen corresponding path program 4 times [2024-11-28 05:16:59,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:59,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625932414] [2024-11-28 05:16:59,188 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:16:59,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:59,214 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:16:59,215 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:59,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:59,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625932414] [2024-11-28 05:16:59,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625932414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:59,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651338955] [2024-11-28 05:16:59,298 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:16:59,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:59,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:59,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:59,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:16:59,370 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:16:59,370 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:59,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:16:59,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:59,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:59,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651338955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:16:59,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:16:59,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 05:16:59,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912888133] [2024-11-28 05:16:59,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:59,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:16:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:59,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:16:59,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:16:59,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:16:59,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2024-11-28 05:16:59,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:59,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:16:59,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:59,873 INFO L124 PetriNetUnfolderBase]: 320/559 cut-off events. [2024-11-28 05:16:59,874 INFO L125 PetriNetUnfolderBase]: For 1341/1341 co-relation queries the response was YES. [2024-11-28 05:16:59,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 559 events. 320/559 cut-off events. For 1341/1341 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2209 event pairs, 38 based on Foata normal form. 13/572 useless extension candidates. Maximal degree in co-relation 1611. Up to 168 conditions per place. [2024-11-28 05:16:59,882 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 58 selfloop transitions, 34 changer transitions 0/93 dead transitions. [2024-11-28 05:16:59,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 93 transitions, 733 flow [2024-11-28 05:16:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:16:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:16:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-11-28 05:16:59,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-11-28 05:16:59,885 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 264 flow. Second operand 9 states and 98 transitions. [2024-11-28 05:16:59,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 93 transitions, 733 flow [2024-11-28 05:16:59,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 701 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-28 05:16:59,896 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 535 flow [2024-11-28 05:16:59,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=535, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-11-28 05:16:59,897 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2024-11-28 05:16:59,897 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 535 flow [2024-11-28 05:16:59,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2024-11-28 05:16:59,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:59,898 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:59,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:17:00,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:00,102 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:00,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash -370597392, now seen corresponding path program 5 times [2024-11-28 05:17:00,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:00,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334752690] [2024-11-28 05:17:00,103 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:17:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:00,119 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:00,119 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:00,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334752690] [2024-11-28 05:17:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334752690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265298157] [2024-11-28 05:17:00,206 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:17:00,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:00,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:00,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:00,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:17:00,282 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:00,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:00,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:17:00,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:00,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:00,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265298157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:00,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:00,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 05:17:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027235452] [2024-11-28 05:17:00,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:00,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:17:00,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:00,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:17:00,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:17:00,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:00,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 535 flow. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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) [2024-11-28 05:17:00,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:00,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:00,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:00,761 INFO L124 PetriNetUnfolderBase]: 307/546 cut-off events. [2024-11-28 05:17:00,761 INFO L125 PetriNetUnfolderBase]: For 2279/2279 co-relation queries the response was YES. [2024-11-28 05:17:00,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 546 events. 307/546 cut-off events. For 2279/2279 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2177 event pairs, 69 based on Foata normal form. 13/559 useless extension candidates. Maximal degree in co-relation 2016. Up to 189 conditions per place. [2024-11-28 05:17:00,769 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 62 selfloop transitions, 34 changer transitions 1/98 dead transitions. [2024-11-28 05:17:00,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 957 flow [2024-11-28 05:17:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:17:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:17:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-28 05:17:00,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-11-28 05:17:00,770 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 535 flow. Second operand 7 states and 83 transitions. [2024-11-28 05:17:00,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 957 flow [2024-11-28 05:17:00,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 941 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-28 05:17:00,784 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 714 flow [2024-11-28 05:17:00,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=714, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-11-28 05:17:00,785 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 43 predicate places. [2024-11-28 05:17:00,785 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 714 flow [2024-11-28 05:17:00,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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) [2024-11-28 05:17:00,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:00,786 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:00,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:17:00,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:00,990 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:00,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:00,991 INFO L85 PathProgramCache]: Analyzing trace with hash 79994308, now seen corresponding path program 6 times [2024-11-28 05:17:00,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:00,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716543660] [2024-11-28 05:17:00,991 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:17:00,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:01,004 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:17:01,004 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:01,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:01,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716543660] [2024-11-28 05:17:01,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716543660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:17:01,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:17:01,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:17:01,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763642570] [2024-11-28 05:17:01,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:01,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:17:01,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:01,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:17:01,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:17:01,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:01,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 714 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-28 05:17:01,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:01,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:01,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:01,295 INFO L124 PetriNetUnfolderBase]: 305/544 cut-off events. [2024-11-28 05:17:01,295 INFO L125 PetriNetUnfolderBase]: For 2841/2841 co-relation queries the response was YES. [2024-11-28 05:17:01,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 544 events. 305/544 cut-off events. For 2841/2841 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2221 event pairs, 124 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 2110. Up to 448 conditions per place. [2024-11-28 05:17:01,301 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 65 selfloop transitions, 11 changer transitions 2/79 dead transitions. [2024-11-28 05:17:01,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 79 transitions, 918 flow [2024-11-28 05:17:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:17:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:17:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-28 05:17:01,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-28 05:17:01,302 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 714 flow. Second operand 5 states and 59 transitions. [2024-11-28 05:17:01,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 79 transitions, 918 flow [2024-11-28 05:17:01,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 850 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-28 05:17:01,318 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 668 flow [2024-11-28 05:17:01,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=668, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-11-28 05:17:01,319 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 43 predicate places. [2024-11-28 05:17:01,319 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 668 flow [2024-11-28 05:17:01,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-28 05:17:01,319 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:01,319 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:01,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:17:01,320 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:01,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1355599738, now seen corresponding path program 7 times [2024-11-28 05:17:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:01,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007638875] [2024-11-28 05:17:01,320 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:17:01,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:01,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:01,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007638875] [2024-11-28 05:17:01,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007638875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:17:01,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:17:01,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:17:01,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325800549] [2024-11-28 05:17:01,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:01,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:17:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:01,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:17:01,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:17:01,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:01,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 668 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-28 05:17:01,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:01,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:01,612 INFO L124 PetriNetUnfolderBase]: 296/517 cut-off events. [2024-11-28 05:17:01,612 INFO L125 PetriNetUnfolderBase]: For 2378/2378 co-relation queries the response was YES. [2024-11-28 05:17:01,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 517 events. 296/517 cut-off events. For 2378/2378 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1966 event pairs, 88 based on Foata normal form. 2/519 useless extension candidates. Maximal degree in co-relation 1701. Up to 287 conditions per place. [2024-11-28 05:17:01,618 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 59 selfloop transitions, 19 changer transitions 2/81 dead transitions. [2024-11-28 05:17:01,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 883 flow [2024-11-28 05:17:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:17:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:17:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-28 05:17:01,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-28 05:17:01,620 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 668 flow. Second operand 5 states and 58 transitions. [2024-11-28 05:17:01,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 883 flow [2024-11-28 05:17:01,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 860 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-28 05:17:01,632 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 703 flow [2024-11-28 05:17:01,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=703, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-11-28 05:17:01,633 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2024-11-28 05:17:01,633 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 703 flow [2024-11-28 05:17:01,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-28 05:17:01,634 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:01,634 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:01,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:17:01,634 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:01,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash -579368584, now seen corresponding path program 1 times [2024-11-28 05:17:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468434578] [2024-11-28 05:17:01,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:01,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:01,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:01,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468434578] [2024-11-28 05:17:01,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468434578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:01,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099812541] [2024-11-28 05:17:01,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:01,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:01,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:01,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:01,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:17:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:01,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:17:01,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:01,963 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:17:01,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099812541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:17:01,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:17:01,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 5 [2024-11-28 05:17:01,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775151179] [2024-11-28 05:17:01,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:01,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:17:01,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:01,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:17:01,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:17:01,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 05:17:01,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 703 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:01,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:01,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 05:17:01,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:02,203 INFO L124 PetriNetUnfolderBase]: 444/820 cut-off events. [2024-11-28 05:17:02,204 INFO L125 PetriNetUnfolderBase]: For 4656/4687 co-relation queries the response was YES. [2024-11-28 05:17:02,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 820 events. 444/820 cut-off events. For 4656/4687 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3746 event pairs, 67 based on Foata normal form. 12/831 useless extension candidates. Maximal degree in co-relation 2501. Up to 371 conditions per place. [2024-11-28 05:17:02,211 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 102 selfloop transitions, 5 changer transitions 19/133 dead transitions. [2024-11-28 05:17:02,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 133 transitions, 1566 flow [2024-11-28 05:17:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:17:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:17:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-28 05:17:02,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 05:17:02,212 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 703 flow. Second operand 4 states and 64 transitions. [2024-11-28 05:17:02,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 133 transitions, 1566 flow [2024-11-28 05:17:02,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 1530 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:17:02,231 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 690 flow [2024-11-28 05:17:02,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=690, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-11-28 05:17:02,231 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2024-11-28 05:17:02,232 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 690 flow [2024-11-28 05:17:02,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:02,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:02,232 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:02,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:17:02,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:02,436 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:02,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:02,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1021136615, now seen corresponding path program 2 times [2024-11-28 05:17:02,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:02,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31724822] [2024-11-28 05:17:02,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:17:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:02,451 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:02,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:02,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:02,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31724822] [2024-11-28 05:17:02,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31724822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:02,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123238436] [2024-11-28 05:17:02,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:17:02,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:02,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:02,597 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:02,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:17:02,660 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:02,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:02,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:02,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:02,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:02,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123238436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:02,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:02,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-28 05:17:02,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295375857] [2024-11-28 05:17:02,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:02,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:17:02,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:02,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:17:02,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:17:02,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:02,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 690 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:02,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:02,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:02,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:03,475 INFO L124 PetriNetUnfolderBase]: 984/1624 cut-off events. [2024-11-28 05:17:03,475 INFO L125 PetriNetUnfolderBase]: For 8891/8891 co-relation queries the response was YES. [2024-11-28 05:17:03,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7479 conditions, 1624 events. 984/1624 cut-off events. For 8891/8891 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7167 event pairs, 113 based on Foata normal form. 12/1636 useless extension candidates. Maximal degree in co-relation 5580. Up to 373 conditions per place. [2024-11-28 05:17:03,490 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 130 selfloop transitions, 53 changer transitions 3/187 dead transitions. [2024-11-28 05:17:03,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 187 transitions, 1911 flow [2024-11-28 05:17:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:17:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 05:17:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 170 transitions. [2024-11-28 05:17:03,492 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-28 05:17:03,492 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 690 flow. Second operand 14 states and 170 transitions. [2024-11-28 05:17:03,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 187 transitions, 1911 flow [2024-11-28 05:17:03,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 187 transitions, 1911 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:17:03,521 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 1126 flow [2024-11-28 05:17:03,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1126, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2024-11-28 05:17:03,522 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 63 predicate places. [2024-11-28 05:17:03,523 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 1126 flow [2024-11-28 05:17:03,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:03,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:03,523 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:03,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:17:03,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:03,728 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:03,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1011721463, now seen corresponding path program 3 times [2024-11-28 05:17:03,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:03,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136923831] [2024-11-28 05:17:03,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:17:03,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:03,750 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:17:03,751 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:03,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:03,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136923831] [2024-11-28 05:17:03,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136923831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:03,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782083688] [2024-11-28 05:17:03,862 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:17:03,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:03,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:03,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:17:03,934 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:17:03,934 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:03,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:03,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:04,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:04,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782083688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:04,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:04,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 05:17:04,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105690668] [2024-11-28 05:17:04,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:04,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 05:17:04,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:04,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 05:17:04,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:17:04,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:04,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 1126 flow. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:04,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:04,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:04,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:04,886 INFO L124 PetriNetUnfolderBase]: 1386/2294 cut-off events. [2024-11-28 05:17:04,886 INFO L125 PetriNetUnfolderBase]: For 17670/17670 co-relation queries the response was YES. [2024-11-28 05:17:04,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12244 conditions, 2294 events. 1386/2294 cut-off events. For 17670/17670 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11012 event pairs, 123 based on Foata normal form. 18/2312 useless extension candidates. Maximal degree in co-relation 8610. Up to 461 conditions per place. [2024-11-28 05:17:04,910 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 124 selfloop transitions, 84 changer transitions 3/212 dead transitions. [2024-11-28 05:17:04,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 212 transitions, 2494 flow [2024-11-28 05:17:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:17:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 05:17:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 185 transitions. [2024-11-28 05:17:04,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-11-28 05:17:04,912 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 1126 flow. Second operand 17 states and 185 transitions. [2024-11-28 05:17:04,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 212 transitions, 2494 flow [2024-11-28 05:17:04,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 212 transitions, 2426 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-11-28 05:17:04,974 INFO L231 Difference]: Finished difference. Result has 108 places, 135 transitions, 1719 flow [2024-11-28 05:17:04,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1719, PETRI_PLACES=108, PETRI_TRANSITIONS=135} [2024-11-28 05:17:04,977 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 82 predicate places. [2024-11-28 05:17:04,978 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 135 transitions, 1719 flow [2024-11-28 05:17:04,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:04,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:04,978 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:04,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 05:17:05,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 05:17:05,179 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:05,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1244590649, now seen corresponding path program 4 times [2024-11-28 05:17:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:05,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364999915] [2024-11-28 05:17:05,180 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:17:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:05,191 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:17:05,191 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:05,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:05,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364999915] [2024-11-28 05:17:05,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364999915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:05,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32143906] [2024-11-28 05:17:05,265 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:17:05,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:05,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:05,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:05,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:17:05,324 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:17:05,324 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:05,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:05,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:05,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:05,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32143906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:05,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-28 05:17:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697380714] [2024-11-28 05:17:05,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:05,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:17:05,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:05,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:17:05,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:17:05,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:05,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 135 transitions, 1719 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2024-11-28 05:17:05,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:05,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:05,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:06,312 INFO L124 PetriNetUnfolderBase]: 1634/2701 cut-off events. [2024-11-28 05:17:06,313 INFO L125 PetriNetUnfolderBase]: For 30610/30610 co-relation queries the response was YES. [2024-11-28 05:17:06,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16155 conditions, 2701 events. 1634/2701 cut-off events. For 30610/30610 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13457 event pairs, 101 based on Foata normal form. 42/2743 useless extension candidates. Maximal degree in co-relation 15407. Up to 809 conditions per place. [2024-11-28 05:17:06,344 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 115 selfloop transitions, 113 changer transitions 30/259 dead transitions. [2024-11-28 05:17:06,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 259 transitions, 3444 flow [2024-11-28 05:17:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:17:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:17:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-28 05:17:06,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-28 05:17:06,347 INFO L175 Difference]: Start difference. First operand has 108 places, 135 transitions, 1719 flow. Second operand 15 states and 159 transitions. [2024-11-28 05:17:06,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 259 transitions, 3444 flow [2024-11-28 05:17:06,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 259 transitions, 3147 flow, removed 109 selfloop flow, removed 3 redundant places. [2024-11-28 05:17:06,450 INFO L231 Difference]: Finished difference. Result has 126 places, 168 transitions, 2374 flow [2024-11-28 05:17:06,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2374, PETRI_PLACES=126, PETRI_TRANSITIONS=168} [2024-11-28 05:17:06,451 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 100 predicate places. [2024-11-28 05:17:06,453 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 168 transitions, 2374 flow [2024-11-28 05:17:06,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2024-11-28 05:17:06,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:06,454 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:06,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:17:06,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 05:17:06,654 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:06,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash -70180613, now seen corresponding path program 5 times [2024-11-28 05:17:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577262568] [2024-11-28 05:17:06,655 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:17:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:06,666 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:06,666 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:06,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:06,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577262568] [2024-11-28 05:17:06,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577262568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:06,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283508645] [2024-11-28 05:17:06,743 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:17:06,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:06,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:06,746 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:06,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:17:06,819 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:06,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:06,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:06,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:06,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283508645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:06,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:06,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-28 05:17:06,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943252999] [2024-11-28 05:17:06,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:06,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:17:06,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:06,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:17:06,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:17:06,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:06,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 168 transitions, 2374 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2024-11-28 05:17:06,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:06,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:06,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:08,099 INFO L124 PetriNetUnfolderBase]: 2027/3319 cut-off events. [2024-11-28 05:17:08,099 INFO L125 PetriNetUnfolderBase]: For 52757/52757 co-relation queries the response was YES. [2024-11-28 05:17:08,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21117 conditions, 3319 events. 2027/3319 cut-off events. For 52757/52757 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 17171 event pairs, 80 based on Foata normal form. 104/3423 useless extension candidates. Maximal degree in co-relation 20240. Up to 689 conditions per place. [2024-11-28 05:17:08,134 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 155 selfloop transitions, 171 changer transitions 2/329 dead transitions. [2024-11-28 05:17:08,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 329 transitions, 4689 flow [2024-11-28 05:17:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 05:17:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 05:17:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 249 transitions. [2024-11-28 05:17:08,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45108695652173914 [2024-11-28 05:17:08,137 INFO L175 Difference]: Start difference. First operand has 126 places, 168 transitions, 2374 flow. Second operand 23 states and 249 transitions. [2024-11-28 05:17:08,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 329 transitions, 4689 flow [2024-11-28 05:17:08,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 329 transitions, 4575 flow, removed 56 selfloop flow, removed 1 redundant places. [2024-11-28 05:17:08,321 INFO L231 Difference]: Finished difference. Result has 160 places, 223 transitions, 3844 flow [2024-11-28 05:17:08,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3844, PETRI_PLACES=160, PETRI_TRANSITIONS=223} [2024-11-28 05:17:08,322 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 134 predicate places. [2024-11-28 05:17:08,322 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 223 transitions, 3844 flow [2024-11-28 05:17:08,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2024-11-28 05:17:08,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:08,322 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:08,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:17:08,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 05:17:08,523 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:08,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:08,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1507694469, now seen corresponding path program 6 times [2024-11-28 05:17:08,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:08,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068279749] [2024-11-28 05:17:08,524 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:17:08,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:08,543 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:17:08,543 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:08,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068279749] [2024-11-28 05:17:08,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068279749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585312344] [2024-11-28 05:17:08,639 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:17:08,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:08,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:08,642 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:08,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:17:08,702 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:17:08,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:08,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:08,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:08,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:17:08,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585312344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:17:08,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:17:08,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2024-11-28 05:17:08,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261469480] [2024-11-28 05:17:08,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:08,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:17:08,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:08,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:17:08,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:17:08,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:08,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 223 transitions, 3844 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-11-28 05:17:08,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:08,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:08,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:09,774 INFO L124 PetriNetUnfolderBase]: 2267/3735 cut-off events. [2024-11-28 05:17:09,774 INFO L125 PetriNetUnfolderBase]: For 94482/94482 co-relation queries the response was YES. [2024-11-28 05:17:09,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27827 conditions, 3735 events. 2267/3735 cut-off events. For 94482/94482 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20329 event pairs, 346 based on Foata normal form. 6/3741 useless extension candidates. Maximal degree in co-relation 26440. Up to 2258 conditions per place. [2024-11-28 05:17:09,815 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 180 selfloop transitions, 106 changer transitions 2/289 dead transitions. [2024-11-28 05:17:09,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 289 transitions, 5178 flow [2024-11-28 05:17:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:17:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:17:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-11-28 05:17:09,817 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 05:17:09,817 INFO L175 Difference]: Start difference. First operand has 160 places, 223 transitions, 3844 flow. Second operand 9 states and 108 transitions. [2024-11-28 05:17:09,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 289 transitions, 5178 flow [2024-11-28 05:17:10,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 289 transitions, 4922 flow, removed 97 selfloop flow, removed 3 redundant places. [2024-11-28 05:17:10,377 INFO L231 Difference]: Finished difference. Result has 167 places, 239 transitions, 4199 flow [2024-11-28 05:17:10,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4199, PETRI_PLACES=167, PETRI_TRANSITIONS=239} [2024-11-28 05:17:10,379 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 141 predicate places. [2024-11-28 05:17:10,379 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 239 transitions, 4199 flow [2024-11-28 05:17:10,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-11-28 05:17:10,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:10,380 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:10,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:17:10,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:17:10,584 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:10,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash 578975637, now seen corresponding path program 7 times [2024-11-28 05:17:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146313962] [2024-11-28 05:17:10,585 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:17:10,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:10,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:10,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146313962] [2024-11-28 05:17:10,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146313962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:10,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210368324] [2024-11-28 05:17:10,705 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:17:10,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:10,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:10,707 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:10,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:17:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:10,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:10,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:10,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:10,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210368324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:10,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:10,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 05:17:10,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938319444] [2024-11-28 05:17:10,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:10,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:17:10,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:10,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:17:10,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:17:10,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:10,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 239 transitions, 4199 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-28 05:17:10,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:10,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:10,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:12,017 INFO L124 PetriNetUnfolderBase]: 2273/3757 cut-off events. [2024-11-28 05:17:12,018 INFO L125 PetriNetUnfolderBase]: For 95748/95748 co-relation queries the response was YES. [2024-11-28 05:17:12,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27924 conditions, 3757 events. 2273/3757 cut-off events. For 95748/95748 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20490 event pairs, 249 based on Foata normal form. 8/3765 useless extension candidates. Maximal degree in co-relation 26436. Up to 847 conditions per place. [2024-11-28 05:17:12,060 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 177 selfloop transitions, 137 changer transitions 2/317 dead transitions. [2024-11-28 05:17:12,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 317 transitions, 5600 flow [2024-11-28 05:17:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:17:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:17:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-11-28 05:17:12,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-11-28 05:17:12,063 INFO L175 Difference]: Start difference. First operand has 167 places, 239 transitions, 4199 flow. Second operand 13 states and 158 transitions. [2024-11-28 05:17:12,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 317 transitions, 5600 flow [2024-11-28 05:17:12,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 317 transitions, 5504 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:17:12,507 INFO L231 Difference]: Finished difference. Result has 175 places, 238 transitions, 4408 flow [2024-11-28 05:17:12,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4408, PETRI_PLACES=175, PETRI_TRANSITIONS=238} [2024-11-28 05:17:12,508 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 149 predicate places. [2024-11-28 05:17:12,508 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 238 transitions, 4408 flow [2024-11-28 05:17:12,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-28 05:17:12,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:12,508 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:12,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:17:12,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 05:17:12,709 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:12,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash -807406085, now seen corresponding path program 8 times [2024-11-28 05:17:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:12,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526143230] [2024-11-28 05:17:12,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:17:12,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:12,719 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:12,719 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:12,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:12,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526143230] [2024-11-28 05:17:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526143230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:12,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918484873] [2024-11-28 05:17:12,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:17:12,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:12,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:12,805 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:12,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:17:12,862 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:12,862 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:12,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:12,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:12,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:13,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918484873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:13,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:13,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-28 05:17:13,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118199737] [2024-11-28 05:17:13,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:13,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:17:13,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:13,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:17:13,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:17:13,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:13,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 238 transitions, 4408 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2024-11-28 05:17:13,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:13,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:13,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:14,148 INFO L124 PetriNetUnfolderBase]: 2573/4230 cut-off events. [2024-11-28 05:17:14,148 INFO L125 PetriNetUnfolderBase]: For 128118/128118 co-relation queries the response was YES. [2024-11-28 05:17:14,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33253 conditions, 4230 events. 2573/4230 cut-off events. For 128118/128118 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 23224 event pairs, 157 based on Foata normal form. 72/4302 useless extension candidates. Maximal degree in co-relation 31301. Up to 910 conditions per place. [2024-11-28 05:17:14,179 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 151 selfloop transitions, 246 changer transitions 7/405 dead transitions. [2024-11-28 05:17:14,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 405 transitions, 7480 flow [2024-11-28 05:17:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 05:17:14,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 05:17:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 259 transitions. [2024-11-28 05:17:14,181 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43166666666666664 [2024-11-28 05:17:14,181 INFO L175 Difference]: Start difference. First operand has 175 places, 238 transitions, 4408 flow. Second operand 25 states and 259 transitions. [2024-11-28 05:17:14,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 405 transitions, 7480 flow [2024-11-28 05:17:14,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 405 transitions, 7133 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-11-28 05:17:14,634 INFO L231 Difference]: Finished difference. Result has 198 places, 303 transitions, 6353 flow [2024-11-28 05:17:14,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6353, PETRI_PLACES=198, PETRI_TRANSITIONS=303} [2024-11-28 05:17:14,635 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 172 predicate places. [2024-11-28 05:17:14,635 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 303 transitions, 6353 flow [2024-11-28 05:17:14,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2024-11-28 05:17:14,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:14,636 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:14,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:17:14,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:17:14,836 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:14,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash -774162393, now seen corresponding path program 9 times [2024-11-28 05:17:14,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:14,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670560522] [2024-11-28 05:17:14,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:17:14,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:14,848 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:17:14,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:14,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670560522] [2024-11-28 05:17:14,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670560522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76687953] [2024-11-28 05:17:14,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:17:14,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:14,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:14,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:14,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:17:14,997 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:17:14,997 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:14,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:14,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:15,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:15,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76687953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:15,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:15,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 05:17:15,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132184523] [2024-11-28 05:17:15,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:15,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 05:17:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:15,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 05:17:15,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:17:15,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:15,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 303 transitions, 6353 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2024-11-28 05:17:15,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:15,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:15,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:16,724 INFO L124 PetriNetUnfolderBase]: 2969/4937 cut-off events. [2024-11-28 05:17:16,724 INFO L125 PetriNetUnfolderBase]: For 158563/158563 co-relation queries the response was YES. [2024-11-28 05:17:16,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40812 conditions, 4937 events. 2969/4937 cut-off events. For 158563/158563 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 28526 event pairs, 130 based on Foata normal form. 30/4967 useless extension candidates. Maximal degree in co-relation 37834. Up to 966 conditions per place. [2024-11-28 05:17:16,758 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 216 selfloop transitions, 290 changer transitions 4/511 dead transitions. [2024-11-28 05:17:16,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 511 transitions, 10490 flow [2024-11-28 05:17:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 05:17:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 05:17:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 300 transitions. [2024-11-28 05:17:16,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-11-28 05:17:16,761 INFO L175 Difference]: Start difference. First operand has 198 places, 303 transitions, 6353 flow. Second operand 29 states and 300 transitions. [2024-11-28 05:17:16,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 511 transitions, 10490 flow [2024-11-28 05:17:17,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 511 transitions, 9996 flow, removed 136 selfloop flow, removed 14 redundant places. [2024-11-28 05:17:17,381 INFO L231 Difference]: Finished difference. Result has 215 places, 373 transitions, 8604 flow [2024-11-28 05:17:17,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5932, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8604, PETRI_PLACES=215, PETRI_TRANSITIONS=373} [2024-11-28 05:17:17,382 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 189 predicate places. [2024-11-28 05:17:17,382 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 373 transitions, 8604 flow [2024-11-28 05:17:17,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2024-11-28 05:17:17,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:17,383 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:17,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:17:17,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:17:17,583 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:17,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash 179472853, now seen corresponding path program 10 times [2024-11-28 05:17:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:17,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214725918] [2024-11-28 05:17:17,584 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:17:17,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:17,591 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:17:17,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:17,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:17,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214725918] [2024-11-28 05:17:17,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214725918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:17,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534474895] [2024-11-28 05:17:17,677 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:17:17,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:17,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:17,679 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:17,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:17:17,742 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:17:17,742 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:17,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:17,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:17,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:17,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534474895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:17,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:17,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 05:17:17,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589898474] [2024-11-28 05:17:17,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:17,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:17:17,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:17,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:17:17,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:17:17,880 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:17,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 373 transitions, 8604 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-11-28 05:17:17,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:17,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:17,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:19,562 INFO L124 PetriNetUnfolderBase]: 3370/5581 cut-off events. [2024-11-28 05:17:19,562 INFO L125 PetriNetUnfolderBase]: For 215383/215383 co-relation queries the response was YES. [2024-11-28 05:17:19,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47610 conditions, 5581 events. 3370/5581 cut-off events. For 215383/215383 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32993 event pairs, 1200 based on Foata normal form. 18/5599 useless extension candidates. Maximal degree in co-relation 45453. Up to 4277 conditions per place. [2024-11-28 05:17:19,615 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 412 selfloop transitions, 62 changer transitions 2/477 dead transitions. [2024-11-28 05:17:19,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 477 transitions, 11003 flow [2024-11-28 05:17:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:17:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:17:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-11-28 05:17:19,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-11-28 05:17:19,617 INFO L175 Difference]: Start difference. First operand has 215 places, 373 transitions, 8604 flow. Second operand 13 states and 147 transitions. [2024-11-28 05:17:19,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 477 transitions, 11003 flow [2024-11-28 05:17:20,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 477 transitions, 10710 flow, removed 69 selfloop flow, removed 14 redundant places. [2024-11-28 05:17:20,817 INFO L231 Difference]: Finished difference. Result has 220 places, 399 transitions, 9108 flow [2024-11-28 05:17:20,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8329, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9108, PETRI_PLACES=220, PETRI_TRANSITIONS=399} [2024-11-28 05:17:20,818 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 194 predicate places. [2024-11-28 05:17:20,818 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 399 transitions, 9108 flow [2024-11-28 05:17:20,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-11-28 05:17:20,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:20,818 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:20,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:17:21,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:17:21,019 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:21,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2118897873, now seen corresponding path program 11 times [2024-11-28 05:17:21,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:21,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470084222] [2024-11-28 05:17:21,020 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:17:21,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:21,028 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 05:17:21,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:21,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470084222] [2024-11-28 05:17:21,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470084222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:21,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207607781] [2024-11-28 05:17:21,089 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:17:21,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:21,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:21,091 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:21,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:17:21,145 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 05:17:21,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:21,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:21,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:21,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207607781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:21,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:21,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 05:17:21,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243378219] [2024-11-28 05:17:21,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:21,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:17:21,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:21,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:17:21,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:17:21,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:21,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 399 transitions, 9108 flow. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:21,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:21,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:21,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:22,994 INFO L124 PetriNetUnfolderBase]: 3722/6148 cut-off events. [2024-11-28 05:17:22,994 INFO L125 PetriNetUnfolderBase]: For 258693/258693 co-relation queries the response was YES. [2024-11-28 05:17:23,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53985 conditions, 6148 events. 3722/6148 cut-off events. For 258693/258693 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 36688 event pairs, 558 based on Foata normal form. 84/6232 useless extension candidates. Maximal degree in co-relation 52034. Up to 2640 conditions per place. [2024-11-28 05:17:23,044 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 326 selfloop transitions, 212 changer transitions 3/542 dead transitions. [2024-11-28 05:17:23,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 542 transitions, 12359 flow [2024-11-28 05:17:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 05:17:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 05:17:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 221 transitions. [2024-11-28 05:17:23,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2024-11-28 05:17:23,046 INFO L175 Difference]: Start difference. First operand has 220 places, 399 transitions, 9108 flow. Second operand 20 states and 221 transitions. [2024-11-28 05:17:23,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 542 transitions, 12359 flow [2024-11-28 05:17:24,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 542 transitions, 12157 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-11-28 05:17:24,433 INFO L231 Difference]: Finished difference. Result has 245 places, 433 transitions, 10705 flow [2024-11-28 05:17:24,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8925, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=10705, PETRI_PLACES=245, PETRI_TRANSITIONS=433} [2024-11-28 05:17:24,434 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 219 predicate places. [2024-11-28 05:17:24,434 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 433 transitions, 10705 flow [2024-11-28 05:17:24,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:24,434 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:24,435 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:24,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 05:17:24,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:24,635 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:24,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:24,636 INFO L85 PathProgramCache]: Analyzing trace with hash -989952857, now seen corresponding path program 12 times [2024-11-28 05:17:24,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:24,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116120040] [2024-11-28 05:17:24,636 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:17:24,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:24,643 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:17:24,644 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:24,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:24,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116120040] [2024-11-28 05:17:24,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116120040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:24,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658327915] [2024-11-28 05:17:24,721 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:17:24,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:24,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:24,723 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:24,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:17:24,777 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:17:24,777 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:24,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:24,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:24,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:24,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658327915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:24,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:24,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-28 05:17:24,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272613510] [2024-11-28 05:17:24,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:24,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:17:24,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:24,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:17:24,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:17:24,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:24,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 433 transitions, 10705 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:24,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:24,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:24,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:26,875 INFO L124 PetriNetUnfolderBase]: 3904/6441 cut-off events. [2024-11-28 05:17:26,875 INFO L125 PetriNetUnfolderBase]: For 337972/337972 co-relation queries the response was YES. [2024-11-28 05:17:26,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61242 conditions, 6441 events. 3904/6441 cut-off events. For 337972/337972 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 38526 event pairs, 570 based on Foata normal form. 54/6495 useless extension candidates. Maximal degree in co-relation 60736. Up to 2457 conditions per place. [2024-11-28 05:17:26,960 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 304 selfloop transitions, 241 changer transitions 2/548 dead transitions. [2024-11-28 05:17:26,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 548 transitions, 13556 flow [2024-11-28 05:17:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 05:17:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 05:17:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 188 transitions. [2024-11-28 05:17:26,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-11-28 05:17:26,962 INFO L175 Difference]: Start difference. First operand has 245 places, 433 transitions, 10705 flow. Second operand 18 states and 188 transitions. [2024-11-28 05:17:26,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 548 transitions, 13556 flow [2024-11-28 05:17:28,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 548 transitions, 13168 flow, removed 142 selfloop flow, removed 6 redundant places. [2024-11-28 05:17:28,895 INFO L231 Difference]: Finished difference. Result has 263 places, 457 transitions, 11937 flow [2024-11-28 05:17:28,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10376, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11937, PETRI_PLACES=263, PETRI_TRANSITIONS=457} [2024-11-28 05:17:28,896 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 237 predicate places. [2024-11-28 05:17:28,896 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 457 transitions, 11937 flow [2024-11-28 05:17:28,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:28,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:28,896 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:28,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 05:17:29,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:29,097 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:29,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:29,097 INFO L85 PathProgramCache]: Analyzing trace with hash 488828565, now seen corresponding path program 13 times [2024-11-28 05:17:29,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:29,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773177172] [2024-11-28 05:17:29,097 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:17:29,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:29,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:29,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773177172] [2024-11-28 05:17:29,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773177172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:29,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407669587] [2024-11-28 05:17:29,190 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:17:29,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:29,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:29,193 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:29,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:17:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:29,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:17:29,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:29,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:17:29,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407669587] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:29,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:17:29,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 13 [2024-11-28 05:17:29,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334300466] [2024-11-28 05:17:29,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:29,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:17:29,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:29,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:17:29,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:17:29,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:29,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 457 transitions, 11937 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-11-28 05:17:29,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:29,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:29,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:31,015 INFO L124 PetriNetUnfolderBase]: 3901/6436 cut-off events. [2024-11-28 05:17:31,015 INFO L125 PetriNetUnfolderBase]: For 379176/379176 co-relation queries the response was YES. [2024-11-28 05:17:31,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64064 conditions, 6436 events. 3901/6436 cut-off events. For 379176/379176 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38693 event pairs, 1452 based on Foata normal form. 8/6444 useless extension candidates. Maximal degree in co-relation 63452. Up to 5175 conditions per place. [2024-11-28 05:17:31,086 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 424 selfloop transitions, 67 changer transitions 1/493 dead transitions. [2024-11-28 05:17:31,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 493 transitions, 13360 flow [2024-11-28 05:17:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:17:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:17:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-11-28 05:17:31,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-11-28 05:17:31,087 INFO L175 Difference]: Start difference. First operand has 263 places, 457 transitions, 11937 flow. Second operand 8 states and 95 transitions. [2024-11-28 05:17:31,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 493 transitions, 13360 flow [2024-11-28 05:17:32,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 493 transitions, 13114 flow, removed 75 selfloop flow, removed 14 redundant places. [2024-11-28 05:17:32,890 INFO L231 Difference]: Finished difference. Result has 255 places, 455 transitions, 11836 flow [2024-11-28 05:17:32,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11672, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11836, PETRI_PLACES=255, PETRI_TRANSITIONS=455} [2024-11-28 05:17:32,891 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 229 predicate places. [2024-11-28 05:17:32,891 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 455 transitions, 11836 flow [2024-11-28 05:17:32,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-11-28 05:17:32,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:32,891 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:32,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 05:17:33,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 05:17:33,092 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:33,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1383342171, now seen corresponding path program 14 times [2024-11-28 05:17:33,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:33,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52395224] [2024-11-28 05:17:33,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:17:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:33,103 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:33,103 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:33,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:33,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52395224] [2024-11-28 05:17:33,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52395224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:33,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523237119] [2024-11-28 05:17:33,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:17:33,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:33,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:33,194 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:33,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:17:33,276 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:17:33,276 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:33,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:17:33,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:33,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:33,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523237119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:33,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:33,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 7 [2024-11-28 05:17:33,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036343785] [2024-11-28 05:17:33,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:33,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:17:33,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:33,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:17:33,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:17:33,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 05:17:33,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 455 transitions, 11836 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-28 05:17:33,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:33,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 05:17:33,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:35,802 INFO L124 PetriNetUnfolderBase]: 6015/10255 cut-off events. [2024-11-28 05:17:35,802 INFO L125 PetriNetUnfolderBase]: For 585346/585717 co-relation queries the response was YES. [2024-11-28 05:17:35,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100291 conditions, 10255 events. 6015/10255 cut-off events. For 585346/585717 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 71516 event pairs, 512 based on Foata normal form. 160/10356 useless extension candidates. Maximal degree in co-relation 98700. Up to 3057 conditions per place. [2024-11-28 05:17:35,950 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 993 selfloop transitions, 10 changer transitions 139/1189 dead transitions. [2024-11-28 05:17:35,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1189 transitions, 34371 flow [2024-11-28 05:17:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:17:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:17:35,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-11-28 05:17:35,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-11-28 05:17:35,951 INFO L175 Difference]: Start difference. First operand has 255 places, 455 transitions, 11836 flow. Second operand 5 states and 83 transitions. [2024-11-28 05:17:35,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 1189 transitions, 34371 flow [2024-11-28 05:17:40,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 1189 transitions, 34017 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-28 05:17:40,350 INFO L231 Difference]: Finished difference. Result has 253 places, 451 transitions, 11530 flow [2024-11-28 05:17:40,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11700, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11530, PETRI_PLACES=253, PETRI_TRANSITIONS=451} [2024-11-28 05:17:40,350 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2024-11-28 05:17:40,351 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 451 transitions, 11530 flow [2024-11-28 05:17:40,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-28 05:17:40,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:40,351 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:40,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 05:17:40,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 05:17:40,551 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:40,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:40,552 INFO L85 PathProgramCache]: Analyzing trace with hash -692988522, now seen corresponding path program 15 times [2024-11-28 05:17:40,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:40,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617751392] [2024-11-28 05:17:40,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:17:40,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:40,563 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:17:40,563 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:40,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:40,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617751392] [2024-11-28 05:17:40,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617751392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:40,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892464409] [2024-11-28 05:17:40,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:17:40,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:40,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:40,685 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:40,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 05:17:40,742 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:17:40,742 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:40,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:17:40,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:40,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892464409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:41,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:41,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-28 05:17:41,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448000497] [2024-11-28 05:17:41,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:41,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:17:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:41,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:17:41,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:17:41,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:41,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 451 transitions, 11530 flow. Second operand has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:41,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:41,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:41,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:46,535 INFO L124 PetriNetUnfolderBase]: 9461/15455 cut-off events. [2024-11-28 05:17:46,536 INFO L125 PetriNetUnfolderBase]: For 941345/941345 co-relation queries the response was YES. [2024-11-28 05:17:46,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159509 conditions, 15455 events. 9461/15455 cut-off events. For 941345/941345 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 104467 event pairs, 330 based on Foata normal form. 185/15640 useless extension candidates. Maximal degree in co-relation 157959. Up to 3081 conditions per place. [2024-11-28 05:17:46,707 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 420 selfloop transitions, 562 changer transitions 30/1013 dead transitions. [2024-11-28 05:17:46,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1013 transitions, 25243 flow [2024-11-28 05:17:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 05:17:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-28 05:17:46,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 460 transitions. [2024-11-28 05:17:46,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-11-28 05:17:46,709 INFO L175 Difference]: Start difference. First operand has 253 places, 451 transitions, 11530 flow. Second operand 44 states and 460 transitions. [2024-11-28 05:17:46,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1013 transitions, 25243 flow [2024-11-28 05:17:53,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 1013 transitions, 25075 flow, removed 84 selfloop flow, removed 0 redundant places. [2024-11-28 05:17:53,898 INFO L231 Difference]: Finished difference. Result has 316 places, 678 transitions, 20207 flow [2024-11-28 05:17:53,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11522, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=20207, PETRI_PLACES=316, PETRI_TRANSITIONS=678} [2024-11-28 05:17:53,899 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 290 predicate places. [2024-11-28 05:17:53,899 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 678 transitions, 20207 flow [2024-11-28 05:17:53,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:17:53,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:53,899 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:53,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 05:17:54,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 05:17:54,100 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:17:54,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash -491074790, now seen corresponding path program 16 times [2024-11-28 05:17:54,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:54,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428449273] [2024-11-28 05:17:54,101 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:17:54,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:54,110 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:17:54,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428449273] [2024-11-28 05:17:54,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428449273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:54,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524194257] [2024-11-28 05:17:54,202 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:17:54,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:54,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:54,204 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:54,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 05:17:54,259 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:17:54,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:17:54,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:17:54,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:54,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:54,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524194257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:17:54,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:17:54,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 05:17:54,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772327401] [2024-11-28 05:17:54,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:54,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:17:54,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:54,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:17:54,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:17:54,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:17:54,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 678 transitions, 20207 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-28 05:17:54,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:54,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:17:54,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:18:02,000 INFO L124 PetriNetUnfolderBase]: 11343/18530 cut-off events. [2024-11-28 05:18:02,000 INFO L125 PetriNetUnfolderBase]: For 1478429/1478429 co-relation queries the response was YES. [2024-11-28 05:18:02,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211021 conditions, 18530 events. 11343/18530 cut-off events. For 1478429/1478429 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 128453 event pairs, 599 based on Foata normal form. 71/18601 useless extension candidates. Maximal degree in co-relation 209159. Up to 6202 conditions per place. [2024-11-28 05:18:02,351 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 391 selfloop transitions, 794 changer transitions 74/1260 dead transitions. [2024-11-28 05:18:02,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 1260 transitions, 37703 flow [2024-11-28 05:18:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:18:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 05:18:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 202 transitions. [2024-11-28 05:18:02,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-11-28 05:18:02,353 INFO L175 Difference]: Start difference. First operand has 316 places, 678 transitions, 20207 flow. Second operand 19 states and 202 transitions. [2024-11-28 05:18:02,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 1260 transitions, 37703 flow [2024-11-28 05:18:16,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1260 transitions, 35879 flow, removed 586 selfloop flow, removed 13 redundant places. [2024-11-28 05:18:16,321 INFO L231 Difference]: Finished difference. Result has 330 places, 1001 transitions, 31944 flow [2024-11-28 05:18:16,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=19351, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=474, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=31944, PETRI_PLACES=330, PETRI_TRANSITIONS=1001} [2024-11-28 05:18:16,323 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 304 predicate places. [2024-11-28 05:18:16,323 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 1001 transitions, 31944 flow [2024-11-28 05:18:16,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-28 05:18:16,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:18:16,323 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:16,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 05:18:16,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:16,524 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:18:16,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1485568738, now seen corresponding path program 17 times [2024-11-28 05:18:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:16,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382642772] [2024-11-28 05:18:16,525 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:18:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:16,541 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 05:18:16,541 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:18:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:18:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382642772] [2024-11-28 05:18:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382642772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:18:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254192321] [2024-11-28 05:18:16,632 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:18:16,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:16,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:18:16,635 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:18:16,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 05:18:16,690 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 05:18:16,690 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:18:16,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:18:16,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:18:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:18:16,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:18:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:18:16,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254192321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:18:16,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:18:16,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 05:18:16,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88327148] [2024-11-28 05:18:16,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:18:16,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:18:16,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:16,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:18:16,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:18:16,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:18:16,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1001 transitions, 31944 flow. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 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) [2024-11-28 05:18:16,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:18:16,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:18:16,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:18:29,878 INFO L124 PetriNetUnfolderBase]: 13874/22494 cut-off events. [2024-11-28 05:18:29,878 INFO L125 PetriNetUnfolderBase]: For 1970238/1970238 co-relation queries the response was YES. [2024-11-28 05:18:30,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263903 conditions, 22494 events. 13874/22494 cut-off events. For 1970238/1970238 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 158852 event pairs, 1262 based on Foata normal form. 54/22548 useless extension candidates. Maximal degree in co-relation 261990. Up to 4840 conditions per place. [2024-11-28 05:18:30,281 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 656 selfloop transitions, 749 changer transitions 8/1414 dead transitions. [2024-11-28 05:18:30,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 1414 transitions, 44801 flow [2024-11-28 05:18:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 05:18:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 05:18:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 226 transitions. [2024-11-28 05:18:30,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-11-28 05:18:30,283 INFO L175 Difference]: Start difference. First operand has 330 places, 1001 transitions, 31944 flow. Second operand 20 states and 226 transitions. [2024-11-28 05:18:30,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 1414 transitions, 44801 flow [2024-11-28 05:19:00,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1414 transitions, 44408 flow, removed 183 selfloop flow, removed 4 redundant places. [2024-11-28 05:19:00,154 INFO L231 Difference]: Finished difference. Result has 351 places, 1172 transitions, 38980 flow [2024-11-28 05:19:00,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=31713, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=584, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=38980, PETRI_PLACES=351, PETRI_TRANSITIONS=1172} [2024-11-28 05:19:00,155 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 325 predicate places. [2024-11-28 05:19:00,156 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 1172 transitions, 38980 flow [2024-11-28 05:19:00,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 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) [2024-11-28 05:19:00,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:00,156 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:00,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 05:19:00,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:00,357 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:19:00,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:00,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1982977538, now seen corresponding path program 18 times [2024-11-28 05:19:00,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:00,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951114507] [2024-11-28 05:19:00,357 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:19:00,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:00,368 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 05:19:00,368 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:19:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:00,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:00,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951114507] [2024-11-28 05:19:00,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951114507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:19:00,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834483068] [2024-11-28 05:19:00,485 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:19:00,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:00,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:19:00,488 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:19:00,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7543a29-582c-4eab-bf54-38b832c188fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 05:19:00,550 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 05:19:00,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:19:00,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:19:00,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:19:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:00,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:19:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:00,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834483068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:19:00,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:19:00,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-28 05:19:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89390166] [2024-11-28 05:19:00,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:19:00,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:19:00,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:00,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:19:00,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:19:00,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 05:19:00,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 1172 transitions, 38980 flow. Second operand has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 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) [2024-11-28 05:19:00,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:00,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 05:19:00,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:21,141 INFO L124 PetriNetUnfolderBase]: 16820/27330 cut-off events. [2024-11-28 05:19:21,142 INFO L125 PetriNetUnfolderBase]: For 2577590/2577590 co-relation queries the response was YES. [2024-11-28 05:19:21,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335668 conditions, 27330 events. 16820/27330 cut-off events. For 2577590/2577590 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 197600 event pairs, 1013 based on Foata normal form. 164/27494 useless extension candidates. Maximal degree in co-relation 333749. Up to 9463 conditions per place. [2024-11-28 05:19:21,773 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 601 selfloop transitions, 1219 changer transitions 9/1830 dead transitions. [2024-11-28 05:19:21,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1830 transitions, 62208 flow [2024-11-28 05:19:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 05:19:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 05:19:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 240 transitions. [2024-11-28 05:19:21,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-28 05:19:21,775 INFO L175 Difference]: Start difference. First operand has 351 places, 1172 transitions, 38980 flow. Second operand 22 states and 240 transitions. [2024-11-28 05:19:21,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1830 transitions, 62208 flow