./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/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_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/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_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/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 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:56:56,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:56:56,855 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:56:56,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:56:56,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:56:56,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:56:56,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:56:56,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:56:56,901 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:56:56,901 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:56:56,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:56:56,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:56:56,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:56:56,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:56:56,902 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:56:56,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:56:56,903 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:56:56,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:56:56,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:56:56,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:56:56,903 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:56:56,903 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:56:56,903 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:56:56,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:56:56,904 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:56:56,904 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:56:56,904 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:56:56,904 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:56:56,904 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:56:56,904 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:56:56,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:56:56,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:56:56,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:56:56,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:56,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:56:56,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:56:56,906 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:56:56,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:56:56,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:56,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:56:56,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:56:56,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:56:56,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:56:56,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:56:56,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:56:56,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:56:56,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:56:56,907 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_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/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 -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-28 02:56:57,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:56:57,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:56:57,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:56:57,321 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:56:57,322 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:56:57,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-28 02:57:00,555 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/data/c18815de5/9bb199f69e3e41f49c679b3a1bcd310c/FLAGbcdf76f56 [2024-11-28 02:57:00,895 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:57:00,899 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-28 02:57:00,918 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/data/c18815de5/9bb199f69e3e41f49c679b3a1bcd310c/FLAGbcdf76f56 [2024-11-28 02:57:00,963 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/data/c18815de5/9bb199f69e3e41f49c679b3a1bcd310c [2024-11-28 02:57:00,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:57:00,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:57:00,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:57:00,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:57:00,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:57:00,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:00" (1/1) ... [2024-11-28 02:57:00,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76cd6735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:00, skipping insertion in model container [2024-11-28 02:57:00,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:00" (1/1) ... [2024-11-28 02:57:00,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:57:01,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:57:01,211 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:57:01,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:57:01,247 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:57:01,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01 WrapperNode [2024-11-28 02:57:01,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:57:01,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:57:01,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:57:01,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:57:01,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,285 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 99 [2024-11-28 02:57:01,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:57:01,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:57:01,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:57:01,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:57:01,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,308 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 02:57:01,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,313 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:57:01,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:57:01,322 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:57:01,322 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:57:01,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2024-11-28 02:57:01,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:01,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:01,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:57:01,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:57:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:57:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:57:01,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:57:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:57:01,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:57:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 02:57:01,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 02:57:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 02:57:01,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 02:57:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:57:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:57:01,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:57:01,387 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 02:57:01,482 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:57:01,484 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:57:01,718 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:57:01,718 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:57:01,882 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:57:01,882 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:57:01,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:01 BoogieIcfgContainer [2024-11-28 02:57:01,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:57:01,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:57:01,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:57:01,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:57:01,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:00" (1/3) ... [2024-11-28 02:57:01,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17719040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:01, skipping insertion in model container [2024-11-28 02:57:01,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (2/3) ... [2024-11-28 02:57:01,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17719040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:01, skipping insertion in model container [2024-11-28 02:57:01,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:01" (3/3) ... [2024-11-28 02:57:01,898 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-28 02:57:01,916 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:57:01,917 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-difference-det.wvr.c that has 5 procedures, 39 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2024-11-28 02:57:01,918 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:57:02,019 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 02:57:02,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-28 02:57:02,117 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-28 02:57:02,119 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:57:02,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-28 02:57:02,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-28 02:57:02,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-28 02:57:02,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:57:02,160 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;@679b8b39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:57:02,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 02:57:02,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:57:02,184 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-28 02:57:02,184 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:57:02,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:02,185 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:02,185 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:02,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:02,203 INFO L85 PathProgramCache]: Analyzing trace with hash 163365201, now seen corresponding path program 1 times [2024-11-28 02:57:02,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:02,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972852924] [2024-11-28 02:57:02,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:02,644 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 02:57:02,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972852924] [2024-11-28 02:57:02,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972852924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:02,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:02,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:57:02,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150707214] [2024-11-28 02:57:02,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:02,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:57:02,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:02,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:57:02,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:02,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-28 02:57:02,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:02,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:02,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-28 02:57:02,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:03,668 INFO L124 PetriNetUnfolderBase]: 4206/5691 cut-off events. [2024-11-28 02:57:03,668 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2024-11-28 02:57:03,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11679 conditions, 5691 events. 4206/5691 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24088 event pairs, 1080 based on Foata normal form. 2/5302 useless extension candidates. Maximal degree in co-relation 10316. Up to 4714 conditions per place. [2024-11-28 02:57:03,726 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-28 02:57:03,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-28 02:57:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:57:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:57:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-28 02:57:03,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-28 02:57:03,753 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 81 transitions. [2024-11-28 02:57:03,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-28 02:57:03,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 02:57:03,780 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-28 02:57:03,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-28 02:57:03,790 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-28 02:57:03,791 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-28 02:57:03,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:03,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:03,792 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:03,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:57:03,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:03,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash -831601306, now seen corresponding path program 1 times [2024-11-28 02:57:03,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:03,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556651216] [2024-11-28 02:57:03,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:03,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:04,051 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 02:57:04,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:04,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556651216] [2024-11-28 02:57:04,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556651216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:04,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:04,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458369548] [2024-11-28 02:57:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:04,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:04,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:04,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:04,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:04,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 02:57:04,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:04,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:04,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 02:57:04,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:05,587 INFO L124 PetriNetUnfolderBase]: 8890/11817 cut-off events. [2024-11-28 02:57:05,587 INFO L125 PetriNetUnfolderBase]: For 1484/1484 co-relation queries the response was YES. [2024-11-28 02:57:05,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26095 conditions, 11817 events. 8890/11817 cut-off events. For 1484/1484 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 56162 event pairs, 3018 based on Foata normal form. 0/11190 useless extension candidates. Maximal degree in co-relation 3504. Up to 6812 conditions per place. [2024-11-28 02:57:05,666 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 89 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2024-11-28 02:57:05,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 101 transitions, 464 flow [2024-11-28 02:57:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:57:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:57:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-28 02:57:05,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-28 02:57:05,670 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 130 transitions. [2024-11-28 02:57:05,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 101 transitions, 464 flow [2024-11-28 02:57:05,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:57:05,675 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 156 flow [2024-11-28 02:57:05,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-28 02:57:05,677 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-28 02:57:05,677 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 156 flow [2024-11-28 02:57:05,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:05,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:05,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:05,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:57:05,678 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:05,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1897279880, now seen corresponding path program 2 times [2024-11-28 02:57:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:05,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408207169] [2024-11-28 02:57:05,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:05,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:05,714 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:05,714 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:05,898 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 02:57:05,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:05,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408207169] [2024-11-28 02:57:05,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408207169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:05,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270225320] [2024-11-28 02:57:05,899 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:05,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:05,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:05,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:05,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:57:06,016 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:06,016 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:06,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:57:06,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:06,141 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 02:57:06,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:06,208 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 02:57:06,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270225320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:06,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:06,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 02:57:06,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136503656] [2024-11-28 02:57:06,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:06,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:57:06,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:06,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:57:06,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:57:06,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-28 02:57:06,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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 02:57:06,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:06,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-28 02:57:06,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:08,740 INFO L124 PetriNetUnfolderBase]: 15902/20779 cut-off events. [2024-11-28 02:57:08,740 INFO L125 PetriNetUnfolderBase]: For 6689/6689 co-relation queries the response was YES. [2024-11-28 02:57:08,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53356 conditions, 20779 events. 15902/20779 cut-off events. For 6689/6689 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 100527 event pairs, 1195 based on Foata normal form. 354/21133 useless extension candidates. Maximal degree in co-relation 27004. Up to 3779 conditions per place. [2024-11-28 02:57:08,861 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 245 selfloop transitions, 35 changer transitions 1/282 dead transitions. [2024-11-28 02:57:08,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 282 transitions, 1380 flow [2024-11-28 02:57:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:57:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:57:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 352 transitions. [2024-11-28 02:57:08,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2024-11-28 02:57:08,869 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 156 flow. Second operand 14 states and 352 transitions. [2024-11-28 02:57:08,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 282 transitions, 1380 flow [2024-11-28 02:57:08,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 282 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:57:08,902 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 389 flow [2024-11-28 02:57:08,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=389, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2024-11-28 02:57:08,904 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-28 02:57:08,904 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 389 flow [2024-11-28 02:57:08,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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 02:57:08,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:08,904 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:08,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:57:09,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:09,106 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:09,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash 326981324, now seen corresponding path program 1 times [2024-11-28 02:57:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:09,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407709620] [2024-11-28 02:57:09,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:09,285 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 02:57:09,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:09,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407709620] [2024-11-28 02:57:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407709620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:09,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:09,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:09,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057347890] [2024-11-28 02:57:09,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:09,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:09,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:09,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:09,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:09,299 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 02:57:09,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:09,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:09,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 02:57:09,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:11,241 INFO L124 PetriNetUnfolderBase]: 13851/18313 cut-off events. [2024-11-28 02:57:11,241 INFO L125 PetriNetUnfolderBase]: For 21522/21522 co-relation queries the response was YES. [2024-11-28 02:57:11,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55406 conditions, 18313 events. 13851/18313 cut-off events. For 21522/21522 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 90439 event pairs, 4183 based on Foata normal form. 36/18341 useless extension candidates. Maximal degree in co-relation 49347. Up to 9229 conditions per place. [2024-11-28 02:57:11,355 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 101 selfloop transitions, 12 changer transitions 15/132 dead transitions. [2024-11-28 02:57:11,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 824 flow [2024-11-28 02:57:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:57:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:57:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-28 02:57:11,361 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-11-28 02:57:11,361 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 389 flow. Second operand 5 states and 131 transitions. [2024-11-28 02:57:11,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 824 flow [2024-11-28 02:57:11,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 132 transitions, 791 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-28 02:57:11,732 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 394 flow [2024-11-28 02:57:11,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2024-11-28 02:57:11,733 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-28 02:57:11,733 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 394 flow [2024-11-28 02:57:11,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:11,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:11,734 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:11,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:57:11,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:11,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:11,736 INFO L85 PathProgramCache]: Analyzing trace with hash -170352828, now seen corresponding path program 3 times [2024-11-28 02:57:11,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:11,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163053278] [2024-11-28 02:57:11,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:57:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:11,760 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:57:11,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:11,903 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 02:57:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:11,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163053278] [2024-11-28 02:57:11,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163053278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:11,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765237817] [2024-11-28 02:57:11,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:57:11,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:11,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:11,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:11,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:57:11,996 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:57:11,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:11,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:57:11,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:12,080 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 02:57:12,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:12,125 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 02:57:12,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765237817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:12,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:12,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 02:57:12,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172780409] [2024-11-28 02:57:12,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:12,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:57:12,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:12,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:57:12,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:57:12,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-28 02:57:12,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:12,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:12,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-28 02:57:12,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:14,263 INFO L124 PetriNetUnfolderBase]: 22518/29285 cut-off events. [2024-11-28 02:57:14,264 INFO L125 PetriNetUnfolderBase]: For 43160/43160 co-relation queries the response was YES. [2024-11-28 02:57:14,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88459 conditions, 29285 events. 22518/29285 cut-off events. For 43160/43160 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 140739 event pairs, 4683 based on Foata normal form. 438/29723 useless extension candidates. Maximal degree in co-relation 72610. Up to 9338 conditions per place. [2024-11-28 02:57:14,448 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 156 selfloop transitions, 46 changer transitions 0/203 dead transitions. [2024-11-28 02:57:14,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 203 transitions, 1291 flow [2024-11-28 02:57:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:57:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:57:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-11-28 02:57:14,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-11-28 02:57:14,451 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 394 flow. Second operand 8 states and 201 transitions. [2024-11-28 02:57:14,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 203 transitions, 1291 flow [2024-11-28 02:57:14,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 203 transitions, 1250 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-28 02:57:14,846 INFO L231 Difference]: Finished difference. Result has 77 places, 98 transitions, 686 flow [2024-11-28 02:57:14,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=77, PETRI_TRANSITIONS=98} [2024-11-28 02:57:14,847 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-11-28 02:57:14,847 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 98 transitions, 686 flow [2024-11-28 02:57:14,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:14,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:14,847 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:14,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:15,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:15,048 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:15,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1178807432, now seen corresponding path program 4 times [2024-11-28 02:57:15,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:15,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822132086] [2024-11-28 02:57:15,049 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:57:15,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:15,070 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:57:15,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:15,133 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 02:57:15,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:15,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822132086] [2024-11-28 02:57:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822132086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:15,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:15,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:15,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286924412] [2024-11-28 02:57:15,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:15,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:15,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:15,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:15,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-28 02:57:15,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:15,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:15,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-28 02:57:15,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:17,439 INFO L124 PetriNetUnfolderBase]: 23346/30475 cut-off events. [2024-11-28 02:57:17,439 INFO L125 PetriNetUnfolderBase]: For 53301/53301 co-relation queries the response was YES. [2024-11-28 02:57:17,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99793 conditions, 30475 events. 23346/30475 cut-off events. For 53301/53301 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 148372 event pairs, 7920 based on Foata normal form. 24/30499 useless extension candidates. Maximal degree in co-relation 79538. Up to 14716 conditions per place. [2024-11-28 02:57:17,594 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 127 selfloop transitions, 19 changer transitions 10/157 dead transitions. [2024-11-28 02:57:17,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 157 transitions, 1230 flow [2024-11-28 02:57:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:57:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:57:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-28 02:57:17,596 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-28 02:57:17,596 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 686 flow. Second operand 5 states and 120 transitions. [2024-11-28 02:57:17,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 157 transitions, 1230 flow [2024-11-28 02:57:18,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 157 transitions, 1208 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-28 02:57:18,114 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 711 flow [2024-11-28 02:57:18,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=711, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2024-11-28 02:57:18,115 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-11-28 02:57:18,115 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 711 flow [2024-11-28 02:57:18,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:18,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:18,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:18,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:57:18,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:18,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1492101034, now seen corresponding path program 2 times [2024-11-28 02:57:18,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:18,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580056591] [2024-11-28 02:57:18,117 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:18,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:18,133 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:18,133 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:18,224 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 02:57:18,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580056591] [2024-11-28 02:57:18,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580056591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062460581] [2024-11-28 02:57:18,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:18,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:18,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:18,227 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:18,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:57:18,317 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:18,317 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:18,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:57:18,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:18,356 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 02:57:18,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:18,396 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 02:57:18,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062460581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:18,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:18,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 02:57:18,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020342677] [2024-11-28 02:57:18,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:18,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:57:18,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:18,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:57:18,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:57:18,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-28 02:57:18,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 711 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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 02:57:18,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:18,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-28 02:57:18,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:21,455 INFO L124 PetriNetUnfolderBase]: 26693/34806 cut-off events. [2024-11-28 02:57:21,455 INFO L125 PetriNetUnfolderBase]: For 61157/61157 co-relation queries the response was YES. [2024-11-28 02:57:21,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114047 conditions, 34806 events. 26693/34806 cut-off events. For 61157/61157 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 174791 event pairs, 1602 based on Foata normal form. 240/35046 useless extension candidates. Maximal degree in co-relation 103669. Up to 6549 conditions per place. [2024-11-28 02:57:21,645 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 254 selfloop transitions, 80 changer transitions 2/337 dead transitions. [2024-11-28 02:57:21,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 337 transitions, 2300 flow [2024-11-28 02:57:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:57:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:57:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 339 transitions. [2024-11-28 02:57:21,647 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576530612244898 [2024-11-28 02:57:21,648 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 711 flow. Second operand 14 states and 339 transitions. [2024-11-28 02:57:21,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 337 transitions, 2300 flow [2024-11-28 02:57:22,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 337 transitions, 2233 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-28 02:57:22,383 INFO L231 Difference]: Finished difference. Result has 96 places, 134 transitions, 1185 flow [2024-11-28 02:57:22,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1185, PETRI_PLACES=96, PETRI_TRANSITIONS=134} [2024-11-28 02:57:22,384 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2024-11-28 02:57:22,385 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 134 transitions, 1185 flow [2024-11-28 02:57:22,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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 02:57:22,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:22,385 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:22,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:57:22,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:57:22,586 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:22,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash 45283390, now seen corresponding path program 5 times [2024-11-28 02:57:22,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:22,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881857315] [2024-11-28 02:57:22,586 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:57:22,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:22,605 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:57:22,605 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:22,701 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 02:57:22,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881857315] [2024-11-28 02:57:22,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881857315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:22,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:22,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:22,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371715201] [2024-11-28 02:57:22,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:22,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:22,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:22,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:22,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:22,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-28 02:57:22,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 134 transitions, 1185 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:22,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:22,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-28 02:57:22,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:25,674 INFO L124 PetriNetUnfolderBase]: 26294/34299 cut-off events. [2024-11-28 02:57:25,674 INFO L125 PetriNetUnfolderBase]: For 88185/88185 co-relation queries the response was YES. [2024-11-28 02:57:25,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121005 conditions, 34299 events. 26294/34299 cut-off events. For 88185/88185 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 171140 event pairs, 9513 based on Foata normal form. 168/34467 useless extension candidates. Maximal degree in co-relation 112416. Up to 22083 conditions per place. [2024-11-28 02:57:25,841 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 152 selfloop transitions, 32 changer transitions 0/185 dead transitions. [2024-11-28 02:57:25,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 185 transitions, 1674 flow [2024-11-28 02:57:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:57:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:57:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-28 02:57:25,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-11-28 02:57:25,843 INFO L175 Difference]: Start difference. First operand has 96 places, 134 transitions, 1185 flow. Second operand 5 states and 129 transitions. [2024-11-28 02:57:25,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 185 transitions, 1674 flow [2024-11-28 02:57:27,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 185 transitions, 1563 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-28 02:57:27,271 INFO L231 Difference]: Finished difference. Result has 95 places, 131 transitions, 1103 flow [2024-11-28 02:57:27,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1103, PETRI_PLACES=95, PETRI_TRANSITIONS=131} [2024-11-28 02:57:27,272 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2024-11-28 02:57:27,272 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 131 transitions, 1103 flow [2024-11-28 02:57:27,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:27,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:27,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:27,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:57:27,273 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:27,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1941069778, now seen corresponding path program 3 times [2024-11-28 02:57:27,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:27,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396263034] [2024-11-28 02:57:27,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:57:27,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:27,288 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:57:27,289 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:27,372 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 02:57:27,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:27,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396263034] [2024-11-28 02:57:27,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396263034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:27,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942648680] [2024-11-28 02:57:27,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:57:27,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:27,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:27,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:27,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:57:27,462 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:57:27,463 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:27,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:57:27,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:27,519 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 02:57:27,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:27,560 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 02:57:27,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942648680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:27,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:27,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 02:57:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043140537] [2024-11-28 02:57:27,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:27,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:57:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:27,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:57:27,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:57:27,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-28 02:57:27,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 131 transitions, 1103 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 02:57:27,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:27,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-28 02:57:27,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:30,859 INFO L124 PetriNetUnfolderBase]: 28464/37069 cut-off events. [2024-11-28 02:57:30,860 INFO L125 PetriNetUnfolderBase]: For 86963/86963 co-relation queries the response was YES. [2024-11-28 02:57:30,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127136 conditions, 37069 events. 28464/37069 cut-off events. For 86963/86963 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 186572 event pairs, 6783 based on Foata normal form. 240/37309 useless extension candidates. Maximal degree in co-relation 122013. Up to 14245 conditions per place. [2024-11-28 02:57:31,030 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 189 selfloop transitions, 54 changer transitions 0/244 dead transitions. [2024-11-28 02:57:31,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 244 transitions, 1973 flow [2024-11-28 02:57:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:57:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:57:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-11-28 02:57:31,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-28 02:57:31,032 INFO L175 Difference]: Start difference. First operand has 95 places, 131 transitions, 1103 flow. Second operand 8 states and 204 transitions. [2024-11-28 02:57:31,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 244 transitions, 1973 flow [2024-11-28 02:57:32,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 244 transitions, 1881 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 02:57:32,201 INFO L231 Difference]: Finished difference. Result has 100 places, 139 transitions, 1232 flow [2024-11-28 02:57:32,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=100, PETRI_TRANSITIONS=139} [2024-11-28 02:57:32,202 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 54 predicate places. [2024-11-28 02:57:32,202 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 139 transitions, 1232 flow [2024-11-28 02:57:32,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 02:57:32,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:32,202 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:32,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:32,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:32,403 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:32,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:32,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1657738702, now seen corresponding path program 6 times [2024-11-28 02:57:32,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:32,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899600464] [2024-11-28 02:57:32,404 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:57:32,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:32,421 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:57:32,421 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:32,521 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 02:57:32,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899600464] [2024-11-28 02:57:32,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899600464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485363741] [2024-11-28 02:57:32,522 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:57:32,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:32,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:32,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:32,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:57:32,604 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:57:32,604 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:32,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:57:32,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:32,666 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 02:57:32,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:32,708 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 02:57:32,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485363741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:32,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:32,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 02:57:32,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547125684] [2024-11-28 02:57:32,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:32,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:57:32,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:32,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:57:32,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:57:32,718 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-28 02:57:32,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 139 transitions, 1232 flow. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:32,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:32,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-28 02:57:32,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:36,439 INFO L124 PetriNetUnfolderBase]: 33179/43314 cut-off events. [2024-11-28 02:57:36,439 INFO L125 PetriNetUnfolderBase]: For 92748/92748 co-relation queries the response was YES. [2024-11-28 02:57:36,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150246 conditions, 43314 events. 33179/43314 cut-off events. For 92748/92748 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 224750 event pairs, 2721 based on Foata normal form. 270/43584 useless extension candidates. Maximal degree in co-relation 144886. Up to 8574 conditions per place. [2024-11-28 02:57:36,632 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 285 selfloop transitions, 87 changer transitions 1/374 dead transitions. [2024-11-28 02:57:36,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 374 transitions, 2777 flow [2024-11-28 02:57:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:57:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 02:57:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 374 transitions. [2024-11-28 02:57:36,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5936507936507937 [2024-11-28 02:57:36,634 INFO L175 Difference]: Start difference. First operand has 100 places, 139 transitions, 1232 flow. Second operand 15 states and 374 transitions. [2024-11-28 02:57:36,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 374 transitions, 2777 flow [2024-11-28 02:57:39,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 374 transitions, 2647 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-11-28 02:57:39,085 INFO L231 Difference]: Finished difference. Result has 113 places, 154 transitions, 1477 flow [2024-11-28 02:57:39,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1477, PETRI_PLACES=113, PETRI_TRANSITIONS=154} [2024-11-28 02:57:39,086 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-11-28 02:57:39,086 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 154 transitions, 1477 flow [2024-11-28 02:57:39,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:39,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:39,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:39,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:57:39,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:57:39,287 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:39,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1763875104, now seen corresponding path program 4 times [2024-11-28 02:57:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:39,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310521679] [2024-11-28 02:57:39,288 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:57:39,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:39,298 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:57:39,298 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:39,340 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 02:57:39,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:39,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310521679] [2024-11-28 02:57:39,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310521679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:39,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:39,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:39,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496091999] [2024-11-28 02:57:39,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:39,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:39,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:39,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:39,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:39,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-28 02:57:39,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 154 transitions, 1477 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:39,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:39,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-28 02:57:39,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:42,804 INFO L124 PetriNetUnfolderBase]: 33133/43280 cut-off events. [2024-11-28 02:57:42,804 INFO L125 PetriNetUnfolderBase]: For 111009/111009 co-relation queries the response was YES. [2024-11-28 02:57:42,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155357 conditions, 43280 events. 33133/43280 cut-off events. For 111009/111009 co-relation queries the response was YES. Maximal size of possible extension queue 1415. Compared 225614 event pairs, 11578 based on Foata normal form. 36/43316 useless extension candidates. Maximal degree in co-relation 145964. Up to 28381 conditions per place. [2024-11-28 02:57:43,075 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 166 selfloop transitions, 29 changer transitions 10/206 dead transitions. [2024-11-28 02:57:43,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 206 transitions, 2057 flow [2024-11-28 02:57:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:57:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:57:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-28 02:57:43,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-11-28 02:57:43,077 INFO L175 Difference]: Start difference. First operand has 113 places, 154 transitions, 1477 flow. Second operand 5 states and 121 transitions. [2024-11-28 02:57:43,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 206 transitions, 2057 flow [2024-11-28 02:57:44,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 206 transitions, 1952 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-11-28 02:57:44,983 INFO L231 Difference]: Finished difference. Result has 111 places, 153 transitions, 1421 flow [2024-11-28 02:57:44,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1421, PETRI_PLACES=111, PETRI_TRANSITIONS=153} [2024-11-28 02:57:44,984 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 65 predicate places. [2024-11-28 02:57:44,984 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 153 transitions, 1421 flow [2024-11-28 02:57:44,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:44,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:44,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:44,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:57:44,985 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:44,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1303991294, now seen corresponding path program 7 times [2024-11-28 02:57:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:44,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725159387] [2024-11-28 02:57:44,986 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:57:44,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:45,141 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 02:57:45,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:45,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725159387] [2024-11-28 02:57:45,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725159387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:45,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:45,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:45,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061359053] [2024-11-28 02:57:45,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:45,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:45,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:45,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:45,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:45,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 02:57:45,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 153 transitions, 1421 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:45,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:45,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 02:57:45,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:48,406 INFO L124 PetriNetUnfolderBase]: 29683/39248 cut-off events. [2024-11-28 02:57:48,406 INFO L125 PetriNetUnfolderBase]: For 113664/113860 co-relation queries the response was YES. [2024-11-28 02:57:48,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138497 conditions, 39248 events. 29683/39248 cut-off events. For 113664/113860 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 210570 event pairs, 9970 based on Foata normal form. 24/39108 useless extension candidates. Maximal degree in co-relation 130055. Up to 19118 conditions per place. [2024-11-28 02:57:48,586 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 129 selfloop transitions, 35 changer transitions 9/197 dead transitions. [2024-11-28 02:57:48,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 197 transitions, 1909 flow [2024-11-28 02:57:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:57:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:57:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-28 02:57:48,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-28 02:57:48,587 INFO L175 Difference]: Start difference. First operand has 111 places, 153 transitions, 1421 flow. Second operand 5 states and 119 transitions. [2024-11-28 02:57:48,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 197 transitions, 1909 flow [2024-11-28 02:57:49,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 197 transitions, 1847 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 02:57:49,602 INFO L231 Difference]: Finished difference. Result has 111 places, 152 transitions, 1427 flow [2024-11-28 02:57:49,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1427, PETRI_PLACES=111, PETRI_TRANSITIONS=152} [2024-11-28 02:57:49,603 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 65 predicate places. [2024-11-28 02:57:49,603 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 152 transitions, 1427 flow [2024-11-28 02:57:49,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:49,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:49,603 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:49,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:57:49,604 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:49,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash -882874202, now seen corresponding path program 5 times [2024-11-28 02:57:49,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:49,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099367130] [2024-11-28 02:57:49,605 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:57:49,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:49,618 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:49,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:49,670 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 02:57:49,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099367130] [2024-11-28 02:57:49,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099367130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899852337] [2024-11-28 02:57:49,671 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:57:49,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:49,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:49,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:49,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:57:49,742 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:49,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:49,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:57:49,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:49,784 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 02:57:49,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:49,819 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 02:57:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899852337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:49,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-28 02:57:49,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681798240] [2024-11-28 02:57:49,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:49,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:57:49,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:49,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:57:49,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:57:49,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-28 02:57:49,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 152 transitions, 1427 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:49,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:49,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-28 02:57:49,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:53,619 INFO L124 PetriNetUnfolderBase]: 33282/43447 cut-off events. [2024-11-28 02:57:53,619 INFO L125 PetriNetUnfolderBase]: For 110613/110613 co-relation queries the response was YES. [2024-11-28 02:57:53,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152481 conditions, 43447 events. 33282/43447 cut-off events. For 110613/110613 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 225280 event pairs, 3622 based on Foata normal form. 240/43687 useless extension candidates. Maximal degree in co-relation 146496. Up to 15785 conditions per place. [2024-11-28 02:57:53,815 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 200 selfloop transitions, 61 changer transitions 1/263 dead transitions. [2024-11-28 02:57:53,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 263 transitions, 2330 flow [2024-11-28 02:57:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:57:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:57:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-11-28 02:57:53,817 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5773809523809523 [2024-11-28 02:57:53,817 INFO L175 Difference]: Start difference. First operand has 111 places, 152 transitions, 1427 flow. Second operand 8 states and 194 transitions. [2024-11-28 02:57:53,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 263 transitions, 2330 flow [2024-11-28 02:57:55,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 263 transitions, 2240 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-28 02:57:55,103 INFO L231 Difference]: Finished difference. Result has 113 places, 159 transitions, 1547 flow [2024-11-28 02:57:55,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1547, PETRI_PLACES=113, PETRI_TRANSITIONS=159} [2024-11-28 02:57:55,104 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-11-28 02:57:55,104 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 159 transitions, 1547 flow [2024-11-28 02:57:55,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:55,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:55,104 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:55,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:55,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:57:55,305 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:57:55,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash 884686266, now seen corresponding path program 6 times [2024-11-28 02:57:55,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:55,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217453684] [2024-11-28 02:57:55,306 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:57:55,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:55,314 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:57:55,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:55,361 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 02:57:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:55,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217453684] [2024-11-28 02:57:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217453684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:55,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19730899] [2024-11-28 02:57:55,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:55,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:55,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:55,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:55,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 02:57:55,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 159 transitions, 1547 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:55,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:55,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 02:57:55,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:58,034 INFO L124 PetriNetUnfolderBase]: 29073/38337 cut-off events. [2024-11-28 02:57:58,034 INFO L125 PetriNetUnfolderBase]: For 113388/113796 co-relation queries the response was YES. [2024-11-28 02:57:58,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136182 conditions, 38337 events. 29073/38337 cut-off events. For 113388/113796 co-relation queries the response was YES. Maximal size of possible extension queue 1424. Compared 203248 event pairs, 10488 based on Foata normal form. 36/38216 useless extension candidates. Maximal degree in co-relation 130696. Up to 18789 conditions per place. [2024-11-28 02:57:58,654 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 134 selfloop transitions, 34 changer transitions 10/203 dead transitions. [2024-11-28 02:57:58,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 203 transitions, 2020 flow [2024-11-28 02:57:58,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:57:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:57:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-28 02:57:58,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-28 02:57:58,656 INFO L175 Difference]: Start difference. First operand has 113 places, 159 transitions, 1547 flow. Second operand 5 states and 119 transitions. [2024-11-28 02:57:58,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 203 transitions, 2020 flow [2024-11-28 02:58:00,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 203 transitions, 1984 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-28 02:58:00,400 INFO L231 Difference]: Finished difference. Result has 114 places, 158 transitions, 1565 flow [2024-11-28 02:58:00,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1565, PETRI_PLACES=114, PETRI_TRANSITIONS=158} [2024-11-28 02:58:00,401 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-11-28 02:58:00,401 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 158 transitions, 1565 flow [2024-11-28 02:58:00,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:00,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:00,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:00,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:58:00,402 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:58:00,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1717777031, now seen corresponding path program 1 times [2024-11-28 02:58:00,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:00,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446757797] [2024-11-28 02:58:00,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:00,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:00,566 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 02:58:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446757797] [2024-11-28 02:58:00,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446757797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630243962] [2024-11-28 02:58:00,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:00,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:00,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:00,569 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:00,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50d233c4-c2c6-4a9e-b2c4-a017d7225d3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:58:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:00,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:58:00,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:00,822 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 02:58:00,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:00,896 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 02:58:00,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630243962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:00,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:58:00,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-28 02:58:00,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077601407] [2024-11-28 02:58:00,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:00,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:58:00,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:00,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:58:00,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:58:00,899 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-28 02:58:00,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 158 transitions, 1565 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 02:58:00,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:00,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-28 02:58:00,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand