./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-3.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_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/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_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/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_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/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 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:15:37,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:15:37,841 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:15:37,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:15:37,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:15:37,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:15:37,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:15:37,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:15:37,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:15:37,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:15:37,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:15:37,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:15:37,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:15:37,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:15:37,883 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:15:37,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:15:37,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:15:37,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:15:37,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:15:37,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:15:37,883 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:15:37,884 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:15:37,884 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:15:37,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:15:37,884 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:15:37,884 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:15:37,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:15:37,884 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:15:37,884 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:15:37,884 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:15:37,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:15:37,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:15:37,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:15:37,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:15:37,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:15:37,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:15:37,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:15:37,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:15:37,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:15:37,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:15:37,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:15:37,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:15:37,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:15:37,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:15:37,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:15:37,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:15:37,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:15:37,886 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_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/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 -> 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 [2024-11-28 04:15:38,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:15:38,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:15:38,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:15:38,214 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:15:38,215 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:15:38,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-11-28 04:15:41,105 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/data/467cbe823/1438808c92c34a97aff8c74d91b1f381/FLAGe70a3f53c [2024-11-28 04:15:41,356 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:15:41,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-11-28 04:15:41,365 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/data/467cbe823/1438808c92c34a97aff8c74d91b1f381/FLAGe70a3f53c [2024-11-28 04:15:41,384 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/data/467cbe823/1438808c92c34a97aff8c74d91b1f381 [2024-11-28 04:15:41,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:15:41,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:15:41,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:15:41,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:15:41,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:15:41,397 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658bbeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41, skipping insertion in model container [2024-11-28 04:15:41,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,422 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:15:41,657 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:15:41,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:15:41,685 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:15:41,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:15:41,748 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:15:41,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41 WrapperNode [2024-11-28 04:15:41,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:15:41,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:15:41,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:15:41,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:15:41,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,800 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 154 [2024-11-28 04:15:41,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:15:41,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:15:41,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:15:41,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:15:41,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,848 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 04:15:41,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,848 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,855 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:15:41,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:15:41,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:15:41,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:15:41,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (1/1) ... [2024-11-28 04:15:41,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:15:41,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:41,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:15:41,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:15:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:15:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:15:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:15:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:15:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:15:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:15:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:15:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:15:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:15:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:15:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:15:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:15:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:15:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:15:41,955 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 04:15:42,073 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:15:42,075 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:15:42,530 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:15:42,530 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:15:42,869 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:15:42,872 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:15:42,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:15:42 BoogieIcfgContainer [2024-11-28 04:15:42,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:15:42,875 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:15:42,875 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:15:42,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:15:42,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:15:41" (1/3) ... [2024-11-28 04:15:42,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25177c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:15:42, skipping insertion in model container [2024-11-28 04:15:42,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:41" (2/3) ... [2024-11-28 04:15:42,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25177c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:15:42, skipping insertion in model container [2024-11-28 04:15:42,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:15:42" (3/3) ... [2024-11-28 04:15:42,885 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2024-11-28 04:15:42,904 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:15:42,905 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-cond-3.wvr.c that has 3 procedures, 44 locations, 1 initial locations, 3 loop locations, and 16 error locations. [2024-11-28 04:15:42,906 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:15:42,985 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:15:43,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-28 04:15:43,075 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-28 04:15:43,079 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:15:43,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-28 04:15:43,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-28 04:15:43,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 45 transitions, 102 flow [2024-11-28 04:15:43,098 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:15:43,121 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;@1628457c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:15:43,121 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-28 04:15:43,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:15:43,126 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-28 04:15:43,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:15:43,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:43,128 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:15:43,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:43,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash 546714, now seen corresponding path program 1 times [2024-11-28 04:15:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:43,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102425920] [2024-11-28 04:15:43,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:43,441 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 04:15:43,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:43,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102425920] [2024-11-28 04:15:43,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102425920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:43,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:15:43,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:15:43,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550448068] [2024-11-28 04:15:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:43,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:15:43,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:43,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:15:43,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:15:43,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-28 04:15:43,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 04:15:43,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:43,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-28 04:15:43,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:43,715 INFO L124 PetriNetUnfolderBase]: 146/348 cut-off events. [2024-11-28 04:15:43,715 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-28 04:15:43,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 348 events. 146/348 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1785 event pairs, 97 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 534. Up to 239 conditions per place. [2024-11-28 04:15:43,720 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 24 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-28 04:15:43,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 148 flow [2024-11-28 04:15:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:15:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:15:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-28 04:15:43,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-28 04:15:43,739 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 102 flow. Second operand 3 states and 85 transitions. [2024-11-28 04:15:43,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 148 flow [2024-11-28 04:15:43,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:15:43,754 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 92 flow [2024-11-28 04:15:43,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-11-28 04:15:43,764 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2024-11-28 04:15:43,765 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 92 flow [2024-11-28 04:15:43,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 04:15:43,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:43,765 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:15:43,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:15:43,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:43,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash 546715, now seen corresponding path program 1 times [2024-11-28 04:15:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834502778] [2024-11-28 04:15:43,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:44,205 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 04:15:44,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834502778] [2024-11-28 04:15:44,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834502778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:44,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:15:44,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:15:44,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972667057] [2024-11-28 04:15:44,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:44,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:15:44,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:44,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:15:44,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:15:44,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-28 04:15:44,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 04:15:44,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:44,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-28 04:15:44,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:44,451 INFO L124 PetriNetUnfolderBase]: 147/351 cut-off events. [2024-11-28 04:15:44,452 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 04:15:44,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 351 events. 147/351 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1801 event pairs, 97 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 585. Up to 244 conditions per place. [2024-11-28 04:15:44,458 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 27 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-11-28 04:15:44,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 160 flow [2024-11-28 04:15:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:15:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:15:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-28 04:15:44,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-28 04:15:44,460 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 92 flow. Second operand 3 states and 88 transitions. [2024-11-28 04:15:44,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 160 flow [2024-11-28 04:15:44,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:15:44,463 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 107 flow [2024-11-28 04:15:44,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2024-11-28 04:15:44,465 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2024-11-28 04:15:44,465 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 107 flow [2024-11-28 04:15:44,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 04:15:44,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:44,465 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-28 04:15:44,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:15:44,465 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:44,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:44,468 INFO L85 PathProgramCache]: Analyzing trace with hash 525410319, now seen corresponding path program 1 times [2024-11-28 04:15:44,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:44,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620734361] [2024-11-28 04:15:44,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:44,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:15:44,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:44,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620734361] [2024-11-28 04:15:44,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620734361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:44,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027307344] [2024-11-28 04:15:44,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:44,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:44,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:44,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:44,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:15:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:45,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:15:45,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:45,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 04:15:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:15:45,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:15:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027307344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:45,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:45,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-28 04:15:45,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098866992] [2024-11-28 04:15:45,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:45,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:15:45,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:45,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:15:45,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:15:45,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-28 04:15:45,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 107 flow. Second operand has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 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 04:15:45,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:45,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-28 04:15:45,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:46,107 INFO L124 PetriNetUnfolderBase]: 147/350 cut-off events. [2024-11-28 04:15:46,107 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 04:15:46,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 350 events. 147/350 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1795 event pairs, 97 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 585. Up to 240 conditions per place. [2024-11-28 04:15:46,110 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 23 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2024-11-28 04:15:46,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 163 flow [2024-11-28 04:15:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:15:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:15:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-28 04:15:46,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-28 04:15:46,112 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 107 flow. Second operand 5 states and 125 transitions. [2024-11-28 04:15:46,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 163 flow [2024-11-28 04:15:46,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:15:46,114 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 120 flow [2024-11-28 04:15:46,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2024-11-28 04:15:46,115 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2024-11-28 04:15:46,115 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 120 flow [2024-11-28 04:15:46,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 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 04:15:46,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:46,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:15:46,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:15:46,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:46,320 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:46,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash -889511847, now seen corresponding path program 1 times [2024-11-28 04:15:46,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:46,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446222210] [2024-11-28 04:15:46,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:46,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:46,426 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 04:15:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:46,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446222210] [2024-11-28 04:15:46,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446222210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:46,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:15:46,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:15:46,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018337623] [2024-11-28 04:15:46,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:46,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:15:46,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:46,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:15:46,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:15:46,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 04:15:46,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 04:15:46,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:46,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 04:15:46,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:46,593 INFO L124 PetriNetUnfolderBase]: 147/306 cut-off events. [2024-11-28 04:15:46,593 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 04:15:46,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 306 events. 147/306 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1291 event pairs, 97 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 549. Up to 239 conditions per place. [2024-11-28 04:15:46,597 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 26 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-28 04:15:46,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 166 flow [2024-11-28 04:15:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:15:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:15:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-28 04:15:46,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-28 04:15:46,599 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 120 flow. Second operand 4 states and 84 transitions. [2024-11-28 04:15:46,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 166 flow [2024-11-28 04:15:46,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 153 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 04:15:46,600 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 101 flow [2024-11-28 04:15:46,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-28 04:15:46,601 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -7 predicate places. [2024-11-28 04:15:46,601 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 101 flow [2024-11-28 04:15:46,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 04:15:46,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:46,603 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:15:46,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:15:46,604 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:46,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:46,604 INFO L85 PathProgramCache]: Analyzing trace with hash -889511846, now seen corresponding path program 1 times [2024-11-28 04:15:46,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:46,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737331237] [2024-11-28 04:15:46,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:46,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:46,710 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 04:15:46,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:46,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737331237] [2024-11-28 04:15:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737331237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:46,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:15:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:15:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406705508] [2024-11-28 04:15:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:46,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:15:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:46,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:15:46,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:15:46,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-11-28 04:15:46,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 04:15:46,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:46,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-11-28 04:15:46,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:46,836 INFO L124 PetriNetUnfolderBase]: 146/305 cut-off events. [2024-11-28 04:15:46,836 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 04:15:46,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 305 events. 146/305 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1285 event pairs, 97 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 541. Up to 242 conditions per place. [2024-11-28 04:15:46,838 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 26 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-11-28 04:15:46,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 152 flow [2024-11-28 04:15:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:15:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:15:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-28 04:15:46,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-11-28 04:15:46,842 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 101 flow. Second operand 3 states and 89 transitions. [2024-11-28 04:15:46,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 152 flow [2024-11-28 04:15:46,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:15:46,843 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 97 flow [2024-11-28 04:15:46,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-28 04:15:46,847 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -7 predicate places. [2024-11-28 04:15:46,847 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 97 flow [2024-11-28 04:15:46,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 04:15:46,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:46,847 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:46,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:15:46,848 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:46,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1641157478, now seen corresponding path program 1 times [2024-11-28 04:15:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:46,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157839658] [2024-11-28 04:15:46,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:47,129 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 04:15:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157839658] [2024-11-28 04:15:47,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157839658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317302676] [2024-11-28 04:15:47,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:47,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:47,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:47,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:47,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:15:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:47,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:15:47,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:47,351 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 04:15:47,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:47,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 04:15:47,459 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 04:15:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317302676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:47,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:47,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-28 04:15:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369724537] [2024-11-28 04:15:47,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:47,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:15:47,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:47,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:15:47,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:15:47,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-28 04:15:47,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 97 flow. Second operand has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 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 04:15:47,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:47,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-28 04:15:47,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:48,068 INFO L124 PetriNetUnfolderBase]: 324/590 cut-off events. [2024-11-28 04:15:48,068 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-28 04:15:48,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 590 events. 324/590 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2721 event pairs, 111 based on Foata normal form. 0/498 useless extension candidates. Maximal degree in co-relation 1119. Up to 299 conditions per place. [2024-11-28 04:15:48,072 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 45 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-28 04:15:48,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 238 flow [2024-11-28 04:15:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:15:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:15:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-11-28 04:15:48,073 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 04:15:48,073 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 97 flow. Second operand 5 states and 145 transitions. [2024-11-28 04:15:48,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 238 flow [2024-11-28 04:15:48,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:15:48,078 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 109 flow [2024-11-28 04:15:48,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=93, 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=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-28 04:15:48,079 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2024-11-28 04:15:48,079 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 109 flow [2024-11-28 04:15:48,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 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 04:15:48,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:48,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:48,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:15:48,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:48,280 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:48,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash 877193140, now seen corresponding path program 1 times [2024-11-28 04:15:48,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:48,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849126025] [2024-11-28 04:15:48,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:48,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:48,555 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 04:15:48,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849126025] [2024-11-28 04:15:48,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849126025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809793120] [2024-11-28 04:15:48,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:48,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:48,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:48,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:48,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:15:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:48,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:15:48,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:48,778 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 04:15:48,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:48,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 04:15:48,917 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 04:15:48,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809793120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:48,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:48,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-28 04:15:48,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488609346] [2024-11-28 04:15:48,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:48,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:15:48,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:48,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:15:48,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:15:49,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 04:15:49,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 109 flow. Second operand has 11 states, 11 states have (on average 17.727272727272727) internal successors, (195), 11 states have internal predecessors, (195), 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 04:15:49,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:49,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 04:15:49,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:49,462 INFO L124 PetriNetUnfolderBase]: 586/1003 cut-off events. [2024-11-28 04:15:49,462 INFO L125 PetriNetUnfolderBase]: For 124/160 co-relation queries the response was YES. [2024-11-28 04:15:49,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 1003 events. 586/1003 cut-off events. For 124/160 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4516 event pairs, 144 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 2076. Up to 638 conditions per place. [2024-11-28 04:15:49,469 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 45 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2024-11-28 04:15:49,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 252 flow [2024-11-28 04:15:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:15:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:15:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-28 04:15:49,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-11-28 04:15:49,471 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 109 flow. Second operand 5 states and 127 transitions. [2024-11-28 04:15:49,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 252 flow [2024-11-28 04:15:49,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 245 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:15:49,473 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 137 flow [2024-11-28 04:15:49,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-11-28 04:15:49,474 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-11-28 04:15:49,474 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 137 flow [2024-11-28 04:15:49,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.727272727272727) internal successors, (195), 11 states have internal predecessors, (195), 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 04:15:49,475 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:49,475 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:49,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:15:49,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:15:49,679 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:49,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:49,680 INFO L85 PathProgramCache]: Analyzing trace with hash 899356458, now seen corresponding path program 1 times [2024-11-28 04:15:49,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:49,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523824348] [2024-11-28 04:15:49,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:49,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:15:49,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523824348] [2024-11-28 04:15:49,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523824348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435121998] [2024-11-28 04:15:49,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:49,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:49,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:49,927 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:49,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:15:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:49,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:15:49,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:15:50,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:50,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-28 04:15:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:15:50,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435121998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:50,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:50,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-28 04:15:50,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657080082] [2024-11-28 04:15:50,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:50,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:15:50,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:50,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:15:50,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:15:50,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-28 04:15:50,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 137 flow. Second operand has 17 states, 17 states have (on average 20.764705882352942) internal successors, (353), 17 states have internal predecessors, (353), 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 04:15:50,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:50,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-28 04:15:50,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:51,586 INFO L124 PetriNetUnfolderBase]: 1000/1847 cut-off events. [2024-11-28 04:15:51,586 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-28 04:15:51,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 1847 events. 1000/1847 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10665 event pairs, 510 based on Foata normal form. 0/1592 useless extension candidates. Maximal degree in co-relation 2137. Up to 829 conditions per place. [2024-11-28 04:15:51,598 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 90 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-11-28 04:15:51,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 111 transitions, 552 flow [2024-11-28 04:15:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:15:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:15:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-11-28 04:15:51,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6380208333333334 [2024-11-28 04:15:51,600 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 137 flow. Second operand 8 states and 245 transitions. [2024-11-28 04:15:51,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 111 transitions, 552 flow [2024-11-28 04:15:51,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 111 transitions, 534 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:15:51,604 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 240 flow [2024-11-28 04:15:51,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-28 04:15:51,605 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2024-11-28 04:15:51,605 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 240 flow [2024-11-28 04:15:51,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.764705882352942) internal successors, (353), 17 states have internal predecessors, (353), 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 04:15:51,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:51,605 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:51,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:15:51,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:15:51,806 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:51,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1423184138, now seen corresponding path program 1 times [2024-11-28 04:15:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:51,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600433555] [2024-11-28 04:15:51,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:52,031 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 04:15:52,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:52,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600433555] [2024-11-28 04:15:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600433555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:52,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970998295] [2024-11-28 04:15:52,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:52,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:52,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:52,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:52,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:15:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:52,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:15:52,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:52,256 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 04:15:52,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:52,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 04:15:52,541 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 04:15:52,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970998295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:52,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:52,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-28 04:15:52,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069975288] [2024-11-28 04:15:52,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:52,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:15:52,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:52,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:15:52,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:15:52,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 04:15:52,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 240 flow. Second operand has 14 states, 14 states have (on average 17.357142857142858) internal successors, (243), 14 states have internal predecessors, (243), 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 04:15:52,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:52,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 04:15:52,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:53,239 INFO L124 PetriNetUnfolderBase]: 1217/2063 cut-off events. [2024-11-28 04:15:53,239 INFO L125 PetriNetUnfolderBase]: For 1256/1328 co-relation queries the response was YES. [2024-11-28 04:15:53,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 2063 events. 1217/2063 cut-off events. For 1256/1328 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10746 event pairs, 544 based on Foata normal form. 0/1832 useless extension candidates. Maximal degree in co-relation 3265. Up to 1568 conditions per place. [2024-11-28 04:15:53,253 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 73 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-11-28 04:15:53,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 529 flow [2024-11-28 04:15:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:15:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:15:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-11-28 04:15:53,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-11-28 04:15:53,257 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 240 flow. Second operand 7 states and 184 transitions. [2024-11-28 04:15:53,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 529 flow [2024-11-28 04:15:53,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 527 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:15:53,267 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 293 flow [2024-11-28 04:15:53,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-11-28 04:15:53,269 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2024-11-28 04:15:53,269 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 293 flow [2024-11-28 04:15:53,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.357142857142858) internal successors, (243), 14 states have internal predecessors, (243), 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 04:15:53,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:53,271 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:53,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:15:53,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:15:53,476 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:53,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash -764828618, now seen corresponding path program 2 times [2024-11-28 04:15:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:53,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270656105] [2024-11-28 04:15:53,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:15:53,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:53,494 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:15:53,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:15:53,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:53,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270656105] [2024-11-28 04:15:53,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270656105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:53,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574448081] [2024-11-28 04:15:53,706 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:15:53,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:53,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:53,708 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:53,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:15:53,783 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:15:53,783 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:53,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:15:53,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:53,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-28 04:15:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:15:53,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:15:54,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574448081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:54,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:54,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-28 04:15:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922117585] [2024-11-28 04:15:54,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:54,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:15:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:54,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:15:54,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:15:54,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-28 04:15:54,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 293 flow. Second operand has 11 states, 11 states have (on average 21.727272727272727) internal successors, (239), 11 states have internal predecessors, (239), 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 04:15:54,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:54,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-28 04:15:54,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:55,003 INFO L124 PetriNetUnfolderBase]: 971/1767 cut-off events. [2024-11-28 04:15:55,004 INFO L125 PetriNetUnfolderBase]: For 986/986 co-relation queries the response was YES. [2024-11-28 04:15:55,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4558 conditions, 1767 events. 971/1767 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10142 event pairs, 510 based on Foata normal form. 0/1699 useless extension candidates. Maximal degree in co-relation 2954. Up to 1152 conditions per place. [2024-11-28 04:15:55,017 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 58 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-11-28 04:15:55,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 536 flow [2024-11-28 04:15:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:15:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:15:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-28 04:15:55,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-28 04:15:55,019 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 293 flow. Second operand 5 states and 136 transitions. [2024-11-28 04:15:55,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 536 flow [2024-11-28 04:15:55,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 507 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 04:15:55,025 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 286 flow [2024-11-28 04:15:55,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-28 04:15:55,025 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-11-28 04:15:55,028 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 286 flow [2024-11-28 04:15:55,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.727272727272727) internal successors, (239), 11 states have internal predecessors, (239), 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 04:15:55,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:55,028 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:55,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:15:55,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:55,233 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:55,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:55,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1373054334, now seen corresponding path program 2 times [2024-11-28 04:15:55,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:55,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302953496] [2024-11-28 04:15:55,234 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:15:55,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:55,260 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:15:55,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:15:55,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:55,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302953496] [2024-11-28 04:15:55,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302953496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:55,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:15:55,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:15:55,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091196812] [2024-11-28 04:15:55,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:55,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:15:55,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:55,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:15:55,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:15:55,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 04:15:55,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 04:15:55,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:55,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 04:15:55,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:56,001 INFO L124 PetriNetUnfolderBase]: 1240/2084 cut-off events. [2024-11-28 04:15:56,001 INFO L125 PetriNetUnfolderBase]: For 2388/2388 co-relation queries the response was YES. [2024-11-28 04:15:56,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5847 conditions, 2084 events. 1240/2084 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10813 event pairs, 150 based on Foata normal form. 16/1898 useless extension candidates. Maximal degree in co-relation 3639. Up to 1314 conditions per place. [2024-11-28 04:15:56,016 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 77 selfloop transitions, 17 changer transitions 0/97 dead transitions. [2024-11-28 04:15:56,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 656 flow [2024-11-28 04:15:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:15:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:15:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-11-28 04:15:56,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2024-11-28 04:15:56,018 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 286 flow. Second operand 6 states and 163 transitions. [2024-11-28 04:15:56,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 656 flow [2024-11-28 04:15:56,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 612 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:15:56,028 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 350 flow [2024-11-28 04:15:56,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-11-28 04:15:56,029 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2024-11-28 04:15:56,029 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 350 flow [2024-11-28 04:15:56,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 04:15:56,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:56,030 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:56,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:15:56,030 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:56,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1879358899, now seen corresponding path program 1 times [2024-11-28 04:15:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:56,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614193323] [2024-11-28 04:15:56,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:56,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:56,263 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 04:15:56,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614193323] [2024-11-28 04:15:56,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614193323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223935328] [2024-11-28 04:15:56,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:56,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:56,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:56,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:56,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:15:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:56,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:15:56,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:56,510 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 04:15:56,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:56,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-28 04:15:56,798 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 04:15:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223935328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:56,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:56,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-28 04:15:56,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486762607] [2024-11-28 04:15:56,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:56,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:15:56,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:56,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:15:56,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:15:57,312 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 04:15:57,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 350 flow. Second operand has 17 states, 17 states have (on average 17.294117647058822) internal successors, (294), 17 states have internal predecessors, (294), 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 04:15:57,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:57,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 04:15:57,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:58,001 INFO L124 PetriNetUnfolderBase]: 1125/1901 cut-off events. [2024-11-28 04:15:58,001 INFO L125 PetriNetUnfolderBase]: For 1928/1928 co-relation queries the response was YES. [2024-11-28 04:15:58,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 1901 events. 1125/1901 cut-off events. For 1928/1928 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9699 event pairs, 558 based on Foata normal form. 16/1782 useless extension candidates. Maximal degree in co-relation 3615. Up to 970 conditions per place. [2024-11-28 04:15:58,014 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 89 selfloop transitions, 19 changer transitions 0/111 dead transitions. [2024-11-28 04:15:58,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 723 flow [2024-11-28 04:15:58,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:15:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:15:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-11-28 04:15:58,016 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5598958333333334 [2024-11-28 04:15:58,016 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 350 flow. Second operand 8 states and 215 transitions. [2024-11-28 04:15:58,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 723 flow [2024-11-28 04:15:58,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 111 transitions, 679 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-28 04:15:58,024 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 410 flow [2024-11-28 04:15:58,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-11-28 04:15:58,025 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2024-11-28 04:15:58,025 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 410 flow [2024-11-28 04:15:58,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.294117647058822) internal successors, (294), 17 states have internal predecessors, (294), 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 04:15:58,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:58,026 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:58,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:15:58,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:58,230 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:58,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash -384988025, now seen corresponding path program 1 times [2024-11-28 04:15:58,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:58,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380665920] [2024-11-28 04:15:58,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:15:58,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:58,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380665920] [2024-11-28 04:15:58,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380665920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:58,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265684686] [2024-11-28 04:15:58,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:58,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:58,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:58,538 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:58,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:15:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:58,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:15:58,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:15:58,763 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:15:58,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265684686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:58,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:15:58,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-28 04:15:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361713479] [2024-11-28 04:15:58,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:58,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:15:58,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:58,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:15:58,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:15:58,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 04:15:58,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 04:15:58,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:58,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 04:15:58,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:59,148 INFO L124 PetriNetUnfolderBase]: 958/1650 cut-off events. [2024-11-28 04:15:59,148 INFO L125 PetriNetUnfolderBase]: For 1957/1957 co-relation queries the response was YES. [2024-11-28 04:15:59,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4917 conditions, 1650 events. 958/1650 cut-off events. For 1957/1957 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8486 event pairs, 314 based on Foata normal form. 32/1663 useless extension candidates. Maximal degree in co-relation 3211. Up to 784 conditions per place. [2024-11-28 04:15:59,159 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 44 selfloop transitions, 24 changer transitions 0/71 dead transitions. [2024-11-28 04:15:59,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 588 flow [2024-11-28 04:15:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:15:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:15:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-28 04:15:59,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-28 04:15:59,161 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 410 flow. Second operand 5 states and 112 transitions. [2024-11-28 04:15:59,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 588 flow [2024-11-28 04:15:59,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 571 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 04:15:59,170 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 410 flow [2024-11-28 04:15:59,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-11-28 04:15:59,170 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2024-11-28 04:15:59,171 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 410 flow [2024-11-28 04:15:59,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 04:15:59,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:59,171 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:59,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:15:59,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:59,375 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:59,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:59,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1428337628, now seen corresponding path program 1 times [2024-11-28 04:15:59,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:59,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816064466] [2024-11-28 04:15:59,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:15:59,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:59,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816064466] [2024-11-28 04:15:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816064466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:15:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:15:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631245681] [2024-11-28 04:15:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:59,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:15:59,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:59,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:15:59,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:15:59,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-11-28 04:15:59,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:15:59,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:59,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-11-28 04:15:59,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:15:59,666 INFO L124 PetriNetUnfolderBase]: 1009/1689 cut-off events. [2024-11-28 04:15:59,666 INFO L125 PetriNetUnfolderBase]: For 2236/2236 co-relation queries the response was YES. [2024-11-28 04:15:59,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5393 conditions, 1689 events. 1009/1689 cut-off events. For 2236/2236 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8391 event pairs, 265 based on Foata normal form. 2/1681 useless extension candidates. Maximal degree in co-relation 3518. Up to 1286 conditions per place. [2024-11-28 04:15:59,679 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 60 selfloop transitions, 9 changer transitions 1/73 dead transitions. [2024-11-28 04:15:59,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 595 flow [2024-11-28 04:15:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:15:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:15:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-28 04:15:59,680 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-28 04:15:59,680 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 410 flow. Second operand 3 states and 105 transitions. [2024-11-28 04:15:59,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 595 flow [2024-11-28 04:15:59,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 541 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:15:59,690 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 391 flow [2024-11-28 04:15:59,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-11-28 04:15:59,691 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2024-11-28 04:15:59,691 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 391 flow [2024-11-28 04:15:59,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:15:59,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:15:59,691 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] [2024-11-28 04:15:59,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:15:59,691 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:15:59,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1771426269, now seen corresponding path program 1 times [2024-11-28 04:15:59,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758189523] [2024-11-28 04:15:59,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:59,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:15:59,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:59,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758189523] [2024-11-28 04:15:59,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758189523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:59,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:15:59,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:15:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149705420] [2024-11-28 04:15:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:59,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:15:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:59,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:15:59,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:15:59,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-28 04:15:59,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 391 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 04:15:59,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:15:59,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-28 04:15:59,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:00,200 INFO L124 PetriNetUnfolderBase]: 1026/1732 cut-off events. [2024-11-28 04:16:00,201 INFO L125 PetriNetUnfolderBase]: For 2303/2303 co-relation queries the response was YES. [2024-11-28 04:16:00,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5421 conditions, 1732 events. 1026/1732 cut-off events. For 2303/2303 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9211 event pairs, 365 based on Foata normal form. 18/1750 useless extension candidates. Maximal degree in co-relation 3556. Up to 942 conditions per place. [2024-11-28 04:16:00,219 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 114 selfloop transitions, 9 changer transitions 0/125 dead transitions. [2024-11-28 04:16:00,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 125 transitions, 1052 flow [2024-11-28 04:16:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:16:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-11-28 04:16:00,221 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-11-28 04:16:00,221 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 391 flow. Second operand 5 states and 163 transitions. [2024-11-28 04:16:00,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 125 transitions, 1052 flow [2024-11-28 04:16:00,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 125 transitions, 1006 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:16:00,231 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 448 flow [2024-11-28 04:16:00,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-28 04:16:00,232 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2024-11-28 04:16:00,232 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 448 flow [2024-11-28 04:16:00,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 04:16:00,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:00,233 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] [2024-11-28 04:16:00,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:16:00,233 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:00,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:00,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1073716558, now seen corresponding path program 1 times [2024-11-28 04:16:00,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:00,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364166467] [2024-11-28 04:16:00,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:00,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:00,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:00,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364166467] [2024-11-28 04:16:00,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364166467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:00,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:00,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:16:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198190669] [2024-11-28 04:16:00,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:00,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:16:00,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:00,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:16:00,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:16:00,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:00,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 04:16:00,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:00,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:00,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:00,941 INFO L124 PetriNetUnfolderBase]: 1138/1914 cut-off events. [2024-11-28 04:16:00,941 INFO L125 PetriNetUnfolderBase]: For 3408/3408 co-relation queries the response was YES. [2024-11-28 04:16:00,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6650 conditions, 1914 events. 1138/1914 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9445 event pairs, 467 based on Foata normal form. 64/1978 useless extension candidates. Maximal degree in co-relation 4183. Up to 1115 conditions per place. [2024-11-28 04:16:00,956 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 99 selfloop transitions, 20 changer transitions 0/120 dead transitions. [2024-11-28 04:16:00,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 120 transitions, 1041 flow [2024-11-28 04:16:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:00,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:16:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-11-28 04:16:00,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5922619047619048 [2024-11-28 04:16:00,958 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 448 flow. Second operand 7 states and 199 transitions. [2024-11-28 04:16:00,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 120 transitions, 1041 flow [2024-11-28 04:16:00,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 974 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-28 04:16:00,968 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 555 flow [2024-11-28 04:16:00,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=555, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-28 04:16:00,969 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2024-11-28 04:16:00,970 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 555 flow [2024-11-28 04:16:00,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 04:16:00,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:00,970 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] [2024-11-28 04:16:00,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:16:00,970 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:00,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:00,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2083542050, now seen corresponding path program 2 times [2024-11-28 04:16:00,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:00,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771074442] [2024-11-28 04:16:00,971 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:00,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:00,995 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:16:00,995 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:01,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:01,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771074442] [2024-11-28 04:16:01,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771074442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:01,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:01,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:16:01,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122681710] [2024-11-28 04:16:01,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:01,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:01,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:01,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:01,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:01,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:01,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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 04:16:01,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:01,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:01,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:01,637 INFO L124 PetriNetUnfolderBase]: 1226/2058 cut-off events. [2024-11-28 04:16:01,637 INFO L125 PetriNetUnfolderBase]: For 5552/5552 co-relation queries the response was YES. [2024-11-28 04:16:01,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7949 conditions, 2058 events. 1226/2058 cut-off events. For 5552/5552 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10625 event pairs, 447 based on Foata normal form. 6/2064 useless extension candidates. Maximal degree in co-relation 5445. Up to 1048 conditions per place. [2024-11-28 04:16:01,653 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 95 selfloop transitions, 26 changer transitions 0/122 dead transitions. [2024-11-28 04:16:01,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 122 transitions, 1197 flow [2024-11-28 04:16:01,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:16:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-11-28 04:16:01,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6541666666666667 [2024-11-28 04:16:01,655 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 555 flow. Second operand 5 states and 157 transitions. [2024-11-28 04:16:01,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 122 transitions, 1197 flow [2024-11-28 04:16:01,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 122 transitions, 1177 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-28 04:16:01,674 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 819 flow [2024-11-28 04:16:01,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=819, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-11-28 04:16:01,674 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2024-11-28 04:16:01,674 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 819 flow [2024-11-28 04:16:01,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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 04:16:01,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:01,675 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] [2024-11-28 04:16:01,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:16:01,675 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:01,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:01,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2033627478, now seen corresponding path program 3 times [2024-11-28 04:16:01,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:01,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826981466] [2024-11-28 04:16:01,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:16:01,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:01,693 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 04:16:01,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:01,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:01,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826981466] [2024-11-28 04:16:01,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826981466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:01,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:01,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:16:01,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500659997] [2024-11-28 04:16:01,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:01,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:01,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:01,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:01,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:01,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:01,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 819 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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 04:16:01,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:01,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:01,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:02,167 INFO L124 PetriNetUnfolderBase]: 1220/2052 cut-off events. [2024-11-28 04:16:02,167 INFO L125 PetriNetUnfolderBase]: For 8628/8628 co-relation queries the response was YES. [2024-11-28 04:16:02,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8506 conditions, 2052 events. 1220/2052 cut-off events. For 8628/8628 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10295 event pairs, 625 based on Foata normal form. 6/2058 useless extension candidates. Maximal degree in co-relation 5699. Up to 1577 conditions per place. [2024-11-28 04:16:02,185 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 72 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2024-11-28 04:16:02,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 1322 flow [2024-11-28 04:16:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:16:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-11-28 04:16:02,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 04:16:02,187 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 819 flow. Second operand 5 states and 145 transitions. [2024-11-28 04:16:02,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 1322 flow [2024-11-28 04:16:02,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 110 transitions, 1294 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-28 04:16:02,213 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 1126 flow [2024-11-28 04:16:02,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1126, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2024-11-28 04:16:02,214 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2024-11-28 04:16:02,215 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 1126 flow [2024-11-28 04:16:02,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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 04:16:02,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:02,216 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] [2024-11-28 04:16:02,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:16:02,216 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:02,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash -533942976, now seen corresponding path program 4 times [2024-11-28 04:16:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:02,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371889156] [2024-11-28 04:16:02,218 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:16:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:02,241 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:16:02,241 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:02,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371889156] [2024-11-28 04:16:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371889156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:02,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:02,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717733201] [2024-11-28 04:16:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:02,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:02,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:02,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:04,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:16:04,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:04,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 1126 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 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 04:16:04,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:04,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:04,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:05,013 INFO L124 PetriNetUnfolderBase]: 1268/2136 cut-off events. [2024-11-28 04:16:05,014 INFO L125 PetriNetUnfolderBase]: For 10215/10215 co-relation queries the response was YES. [2024-11-28 04:16:05,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9121 conditions, 2136 events. 1268/2136 cut-off events. For 10215/10215 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11163 event pairs, 433 based on Foata normal form. 32/2168 useless extension candidates. Maximal degree in co-relation 6362. Up to 1072 conditions per place. [2024-11-28 04:16:05,025 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 107 selfloop transitions, 35 changer transitions 0/143 dead transitions. [2024-11-28 04:16:05,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 143 transitions, 1666 flow [2024-11-28 04:16:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:16:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-11-28 04:16:05,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 04:16:05,027 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 1126 flow. Second operand 7 states and 203 transitions. [2024-11-28 04:16:05,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 143 transitions, 1666 flow [2024-11-28 04:16:05,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 143 transitions, 1596 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-11-28 04:16:05,059 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 1228 flow [2024-11-28 04:16:05,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1228, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2024-11-28 04:16:05,060 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2024-11-28 04:16:05,060 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 1228 flow [2024-11-28 04:16:05,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 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 04:16:05,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:05,061 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] [2024-11-28 04:16:05,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:16:05,061 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:05,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:05,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1698367360, now seen corresponding path program 5 times [2024-11-28 04:16:05,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:05,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148886508] [2024-11-28 04:16:05,062 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:16:05,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:05,078 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:16:05,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:05,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:05,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148886508] [2024-11-28 04:16:05,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148886508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:05,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:05,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:16:05,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33816121] [2024-11-28 04:16:05,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:05,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:16:05,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:05,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:16:05,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:16:05,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:05,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 1228 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 04:16:05,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:05,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:05,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:05,754 INFO L124 PetriNetUnfolderBase]: 1226/2052 cut-off events. [2024-11-28 04:16:05,754 INFO L125 PetriNetUnfolderBase]: For 12535/12535 co-relation queries the response was YES. [2024-11-28 04:16:05,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9154 conditions, 2052 events. 1226/2052 cut-off events. For 12535/12535 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10222 event pairs, 607 based on Foata normal form. 24/2076 useless extension candidates. Maximal degree in co-relation 8129. Up to 1551 conditions per place. [2024-11-28 04:16:05,772 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 89 selfloop transitions, 37 changer transitions 0/127 dead transitions. [2024-11-28 04:16:05,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 127 transitions, 1646 flow [2024-11-28 04:16:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:16:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:16:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-11-28 04:16:05,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-28 04:16:05,774 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 1228 flow. Second operand 6 states and 171 transitions. [2024-11-28 04:16:05,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 127 transitions, 1646 flow [2024-11-28 04:16:05,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 127 transitions, 1574 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-28 04:16:05,812 INFO L231 Difference]: Finished difference. Result has 100 places, 102 transitions, 1322 flow [2024-11-28 04:16:05,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1322, PETRI_PLACES=100, PETRI_TRANSITIONS=102} [2024-11-28 04:16:05,813 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 53 predicate places. [2024-11-28 04:16:05,813 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 102 transitions, 1322 flow [2024-11-28 04:16:05,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 04:16:05,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:05,814 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] [2024-11-28 04:16:05,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:16:05,815 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:05,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:05,815 INFO L85 PathProgramCache]: Analyzing trace with hash 427899722, now seen corresponding path program 1 times [2024-11-28 04:16:05,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:05,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663502317] [2024-11-28 04:16:05,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:05,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:06,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:06,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663502317] [2024-11-28 04:16:06,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663502317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:06,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:06,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:16:06,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909602346] [2024-11-28 04:16:06,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:06,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:16:06,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:06,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:16:06,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:16:06,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:06,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 1322 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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 04:16:06,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:06,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:06,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:07,361 INFO L124 PetriNetUnfolderBase]: 2068/3509 cut-off events. [2024-11-28 04:16:07,361 INFO L125 PetriNetUnfolderBase]: For 17980/17980 co-relation queries the response was YES. [2024-11-28 04:16:07,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15095 conditions, 3509 events. 2068/3509 cut-off events. For 17980/17980 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 20396 event pairs, 397 based on Foata normal form. 60/3569 useless extension candidates. Maximal degree in co-relation 13825. Up to 1024 conditions per place. [2024-11-28 04:16:07,392 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 226 selfloop transitions, 74 changer transitions 0/301 dead transitions. [2024-11-28 04:16:07,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 301 transitions, 3670 flow [2024-11-28 04:16:07,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:16:07,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:16:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 342 transitions. [2024-11-28 04:16:07,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6477272727272727 [2024-11-28 04:16:07,394 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 1322 flow. Second operand 11 states and 342 transitions. [2024-11-28 04:16:07,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 301 transitions, 3670 flow [2024-11-28 04:16:07,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 301 transitions, 3502 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-11-28 04:16:07,508 INFO L231 Difference]: Finished difference. Result has 116 places, 150 transitions, 2176 flow [2024-11-28 04:16:07,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2176, PETRI_PLACES=116, PETRI_TRANSITIONS=150} [2024-11-28 04:16:07,510 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 69 predicate places. [2024-11-28 04:16:07,510 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 150 transitions, 2176 flow [2024-11-28 04:16:07,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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 04:16:07,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:07,511 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] [2024-11-28 04:16:07,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:16:07,511 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:07,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:07,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1729984724, now seen corresponding path program 2 times [2024-11-28 04:16:07,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:07,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978814432] [2024-11-28 04:16:07,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:07,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:07,531 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:16:07,534 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:16:07,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:07,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978814432] [2024-11-28 04:16:07,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978814432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:07,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:07,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:16:07,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535943734] [2024-11-28 04:16:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:07,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:07,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:07,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:07,652 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:07,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 150 transitions, 2176 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 04:16:07,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:07,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:07,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:08,352 INFO L124 PetriNetUnfolderBase]: 2028/3473 cut-off events. [2024-11-28 04:16:08,352 INFO L125 PetriNetUnfolderBase]: For 26131/26131 co-relation queries the response was YES. [2024-11-28 04:16:08,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17667 conditions, 3473 events. 2028/3473 cut-off events. For 26131/26131 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19767 event pairs, 786 based on Foata normal form. 78/3551 useless extension candidates. Maximal degree in co-relation 16427. Up to 2092 conditions per place. [2024-11-28 04:16:08,384 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 165 selfloop transitions, 64 changer transitions 0/230 dead transitions. [2024-11-28 04:16:08,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 230 transitions, 3503 flow [2024-11-28 04:16:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:16:08,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:16:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-11-28 04:16:08,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5868055555555556 [2024-11-28 04:16:08,385 INFO L175 Difference]: Start difference. First operand has 116 places, 150 transitions, 2176 flow. Second operand 6 states and 169 transitions. [2024-11-28 04:16:08,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 230 transitions, 3503 flow [2024-11-28 04:16:08,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 230 transitions, 3378 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-11-28 04:16:08,470 INFO L231 Difference]: Finished difference. Result has 123 places, 166 transitions, 2553 flow [2024-11-28 04:16:08,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2553, PETRI_PLACES=123, PETRI_TRANSITIONS=166} [2024-11-28 04:16:08,470 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 76 predicate places. [2024-11-28 04:16:08,471 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 166 transitions, 2553 flow [2024-11-28 04:16:08,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 04:16:08,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:08,471 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 04:16:08,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:16:08,471 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:08,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:08,472 INFO L85 PathProgramCache]: Analyzing trace with hash 831464920, now seen corresponding path program 1 times [2024-11-28 04:16:08,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:08,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156425392] [2024-11-28 04:16:08,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:08,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:08,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:08,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156425392] [2024-11-28 04:16:08,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156425392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:08,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:08,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:16:08,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372502095] [2024-11-28 04:16:08,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:08,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:16:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:08,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:16:08,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:16:08,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:08,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 166 transitions, 2553 flow. Second operand has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 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 04:16:08,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:08,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:08,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:09,667 INFO L124 PetriNetUnfolderBase]: 2060/3537 cut-off events. [2024-11-28 04:16:09,668 INFO L125 PetriNetUnfolderBase]: For 31184/31184 co-relation queries the response was YES. [2024-11-28 04:16:09,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18763 conditions, 3537 events. 2060/3537 cut-off events. For 31184/31184 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 20493 event pairs, 884 based on Foata normal form. 6/3543 useless extension candidates. Maximal degree in co-relation 17481. Up to 2480 conditions per place. [2024-11-28 04:16:09,698 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 188 selfloop transitions, 54 changer transitions 0/243 dead transitions. [2024-11-28 04:16:09,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 243 transitions, 3791 flow [2024-11-28 04:16:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:16:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:16:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-11-28 04:16:09,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-11-28 04:16:09,700 INFO L175 Difference]: Start difference. First operand has 123 places, 166 transitions, 2553 flow. Second operand 9 states and 230 transitions. [2024-11-28 04:16:09,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 243 transitions, 3791 flow [2024-11-28 04:16:09,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 243 transitions, 3682 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-28 04:16:09,826 INFO L231 Difference]: Finished difference. Result has 133 places, 176 transitions, 2735 flow [2024-11-28 04:16:09,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2735, PETRI_PLACES=133, PETRI_TRANSITIONS=176} [2024-11-28 04:16:09,827 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 86 predicate places. [2024-11-28 04:16:09,827 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 176 transitions, 2735 flow [2024-11-28 04:16:09,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 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 04:16:09,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:09,828 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 04:16:09,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 04:16:09,828 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:09,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:09,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1790224782, now seen corresponding path program 2 times [2024-11-28 04:16:09,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:09,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514053410] [2024-11-28 04:16:09,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:09,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:09,848 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:16:09,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:10,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:10,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514053410] [2024-11-28 04:16:10,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514053410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:10,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:10,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:16:10,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883700135] [2024-11-28 04:16:10,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:10,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:16:10,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:10,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:16:10,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:16:10,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:10,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 176 transitions, 2735 flow. Second operand has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 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 04:16:10,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:10,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:10,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:11,005 INFO L124 PetriNetUnfolderBase]: 2121/3647 cut-off events. [2024-11-28 04:16:11,005 INFO L125 PetriNetUnfolderBase]: For 33503/33503 co-relation queries the response was YES. [2024-11-28 04:16:11,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19967 conditions, 3647 events. 2121/3647 cut-off events. For 33503/33503 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21363 event pairs, 860 based on Foata normal form. 6/3653 useless extension candidates. Maximal degree in co-relation 19065. Up to 2450 conditions per place. [2024-11-28 04:16:11,029 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 205 selfloop transitions, 60 changer transitions 0/266 dead transitions. [2024-11-28 04:16:11,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 266 transitions, 4207 flow [2024-11-28 04:16:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:16:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:16:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-11-28 04:16:11,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-28 04:16:11,031 INFO L175 Difference]: Start difference. First operand has 133 places, 176 transitions, 2735 flow. Second operand 9 states and 234 transitions. [2024-11-28 04:16:11,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 266 transitions, 4207 flow [2024-11-28 04:16:11,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 266 transitions, 4126 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-28 04:16:11,116 INFO L231 Difference]: Finished difference. Result has 142 places, 186 transitions, 2937 flow [2024-11-28 04:16:11,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2937, PETRI_PLACES=142, PETRI_TRANSITIONS=186} [2024-11-28 04:16:11,117 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 95 predicate places. [2024-11-28 04:16:11,117 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 186 transitions, 2937 flow [2024-11-28 04:16:11,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 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 04:16:11,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:11,117 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 04:16:11,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 04:16:11,118 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:11,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:11,118 INFO L85 PathProgramCache]: Analyzing trace with hash -330816872, now seen corresponding path program 3 times [2024-11-28 04:16:11,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:11,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057724524] [2024-11-28 04:16:11,118 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:16:11,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:11,142 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:16:11,142 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:11,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:11,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057724524] [2024-11-28 04:16:11,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057724524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:11,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952245789] [2024-11-28 04:16:11,660 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:16:11,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:11,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:11,662 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:11,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:16:11,755 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:16:11,756 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:11,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:16:11,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:11,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:16:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:12,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:12,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 80 [2024-11-28 04:16:12,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:16:12,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 172 [2024-11-28 04:16:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:16,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952245789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:16,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:16,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-11-28 04:16:16,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607561882] [2024-11-28 04:16:16,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:16,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:16:16,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:16,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:16:16,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:16:17,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:17,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 186 transitions, 2937 flow. Second operand has 22 states, 22 states have (on average 21.0) internal successors, (462), 22 states have internal predecessors, (462), 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 04:16:17,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:17,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:17,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:20,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:16:26,284 INFO L124 PetriNetUnfolderBase]: 4811/8079 cut-off events. [2024-11-28 04:16:26,284 INFO L125 PetriNetUnfolderBase]: For 63623/63623 co-relation queries the response was YES. [2024-11-28 04:16:26,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41799 conditions, 8079 events. 4811/8079 cut-off events. For 63623/63623 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 50353 event pairs, 163 based on Foata normal form. 31/8110 useless extension candidates. Maximal degree in co-relation 40767. Up to 2012 conditions per place. [2024-11-28 04:16:26,346 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 373 selfloop transitions, 195 changer transitions 223/792 dead transitions. [2024-11-28 04:16:26,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 792 transitions, 10117 flow [2024-11-28 04:16:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 04:16:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-28 04:16:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1527 transitions. [2024-11-28 04:16:26,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5581140350877193 [2024-11-28 04:16:26,350 INFO L175 Difference]: Start difference. First operand has 142 places, 186 transitions, 2937 flow. Second operand 57 states and 1527 transitions. [2024-11-28 04:16:26,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 792 transitions, 10117 flow [2024-11-28 04:16:26,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 792 transitions, 9946 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-11-28 04:16:26,552 INFO L231 Difference]: Finished difference. Result has 215 places, 294 transitions, 4522 flow [2024-11-28 04:16:26,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=4522, PETRI_PLACES=215, PETRI_TRANSITIONS=294} [2024-11-28 04:16:26,553 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 168 predicate places. [2024-11-28 04:16:26,553 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 294 transitions, 4522 flow [2024-11-28 04:16:26,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 21.0) internal successors, (462), 22 states have internal predecessors, (462), 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 04:16:26,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:26,554 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 04:16:26,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:16:26,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:16:26,754 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:26,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 241818697, now seen corresponding path program 1 times [2024-11-28 04:16:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:26,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159317226] [2024-11-28 04:16:26,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:26,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:26,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159317226] [2024-11-28 04:16:26,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159317226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:26,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:26,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:26,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123523068] [2024-11-28 04:16:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:26,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:26,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:26,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:26,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:26,899 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-28 04:16:26,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 294 transitions, 4522 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 04:16:26,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:26,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-28 04:16:26,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:28,541 INFO L124 PetriNetUnfolderBase]: 3414/5965 cut-off events. [2024-11-28 04:16:28,542 INFO L125 PetriNetUnfolderBase]: For 60112/60112 co-relation queries the response was YES. [2024-11-28 04:16:28,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33547 conditions, 5965 events. 3414/5965 cut-off events. For 60112/60112 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 36813 event pairs, 1139 based on Foata normal form. 12/5976 useless extension candidates. Maximal degree in co-relation 33220. Up to 2751 conditions per place. [2024-11-28 04:16:28,600 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 337 selfloop transitions, 143 changer transitions 4/486 dead transitions. [2024-11-28 04:16:28,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 486 transitions, 7405 flow [2024-11-28 04:16:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:16:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 04:16:28,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 395 transitions. [2024-11-28 04:16:28,602 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6330128205128205 [2024-11-28 04:16:28,602 INFO L175 Difference]: Start difference. First operand has 215 places, 294 transitions, 4522 flow. Second operand 13 states and 395 transitions. [2024-11-28 04:16:28,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 486 transitions, 7405 flow [2024-11-28 04:16:28,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 486 transitions, 6454 flow, removed 312 selfloop flow, removed 19 redundant places. [2024-11-28 04:16:28,899 INFO L231 Difference]: Finished difference. Result has 200 places, 339 transitions, 4892 flow [2024-11-28 04:16:28,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3854, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4892, PETRI_PLACES=200, PETRI_TRANSITIONS=339} [2024-11-28 04:16:28,899 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 153 predicate places. [2024-11-28 04:16:28,899 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 339 transitions, 4892 flow [2024-11-28 04:16:28,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 04:16:28,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:28,900 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 04:16:28,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 04:16:28,900 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:28,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1612510281, now seen corresponding path program 2 times [2024-11-28 04:16:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:28,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235417634] [2024-11-28 04:16:28,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:28,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:28,929 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:16:28,929 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:29,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:29,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235417634] [2024-11-28 04:16:29,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235417634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:29,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223433517] [2024-11-28 04:16:29,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:29,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:29,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:29,128 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:29,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:16:29,209 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:16:29,209 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:29,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:16:29,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:29,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:29,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223433517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:29,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:29,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-28 04:16:29,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117264570] [2024-11-28 04:16:29,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:29,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:16:29,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:29,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:16:29,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:16:29,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:29,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 339 transitions, 4892 flow. Second operand has 16 states, 16 states have (on average 20.4375) internal successors, (327), 16 states have internal predecessors, (327), 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 04:16:29,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:29,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:29,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:31,860 INFO L124 PetriNetUnfolderBase]: 3793/6623 cut-off events. [2024-11-28 04:16:31,860 INFO L125 PetriNetUnfolderBase]: For 62892/62892 co-relation queries the response was YES. [2024-11-28 04:16:31,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37337 conditions, 6623 events. 3793/6623 cut-off events. For 62892/62892 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 41649 event pairs, 1246 based on Foata normal form. 9/6632 useless extension candidates. Maximal degree in co-relation 37106. Up to 2956 conditions per place. [2024-11-28 04:16:31,906 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 355 selfloop transitions, 192 changer transitions 2/550 dead transitions. [2024-11-28 04:16:31,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 550 transitions, 7978 flow [2024-11-28 04:16:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:16:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 04:16:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 494 transitions. [2024-11-28 04:16:31,907 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2024-11-28 04:16:31,907 INFO L175 Difference]: Start difference. First operand has 200 places, 339 transitions, 4892 flow. Second operand 18 states and 494 transitions. [2024-11-28 04:16:31,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 550 transitions, 7978 flow [2024-11-28 04:16:32,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 550 transitions, 7770 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-11-28 04:16:32,158 INFO L231 Difference]: Finished difference. Result has 222 places, 410 transitions, 6275 flow [2024-11-28 04:16:32,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4690, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6275, PETRI_PLACES=222, PETRI_TRANSITIONS=410} [2024-11-28 04:16:32,159 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 175 predicate places. [2024-11-28 04:16:32,159 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 410 transitions, 6275 flow [2024-11-28 04:16:32,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.4375) internal successors, (327), 16 states have internal predecessors, (327), 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 04:16:32,159 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:32,159 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 04:16:32,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:16:32,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:16:32,359 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:32,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:32,360 INFO L85 PathProgramCache]: Analyzing trace with hash -399093311, now seen corresponding path program 3 times [2024-11-28 04:16:32,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:32,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615823156] [2024-11-28 04:16:32,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:16:32,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:32,386 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:16:32,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:32,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615823156] [2024-11-28 04:16:32,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615823156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:32,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269786280] [2024-11-28 04:16:32,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:16:32,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:32,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:32,662 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:32,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:16:32,743 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:16:32,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:32,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:16:32,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:32,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:32,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269786280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:32,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:32,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-28 04:16:32,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330185176] [2024-11-28 04:16:32,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:32,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:16:32,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:32,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:16:32,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:16:32,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:32,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 410 transitions, 6275 flow. Second operand has 16 states, 16 states have (on average 20.5) internal successors, (328), 16 states have internal predecessors, (328), 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 04:16:32,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:32,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:32,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:35,569 INFO L124 PetriNetUnfolderBase]: 4409/7791 cut-off events. [2024-11-28 04:16:35,569 INFO L125 PetriNetUnfolderBase]: For 78973/78973 co-relation queries the response was YES. [2024-11-28 04:16:35,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46703 conditions, 7791 events. 4409/7791 cut-off events. For 78973/78973 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 51586 event pairs, 1574 based on Foata normal form. 32/7823 useless extension candidates. Maximal degree in co-relation 46519. Up to 4514 conditions per place. [2024-11-28 04:16:35,659 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 412 selfloop transitions, 297 changer transitions 7/717 dead transitions. [2024-11-28 04:16:35,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 717 transitions, 11405 flow [2024-11-28 04:16:35,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:16:35,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 04:16:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 625 transitions. [2024-11-28 04:16:35,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5425347222222222 [2024-11-28 04:16:35,661 INFO L175 Difference]: Start difference. First operand has 222 places, 410 transitions, 6275 flow. Second operand 24 states and 625 transitions. [2024-11-28 04:16:35,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 717 transitions, 11405 flow [2024-11-28 04:16:36,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 717 transitions, 11077 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-11-28 04:16:36,140 INFO L231 Difference]: Finished difference. Result has 256 places, 577 transitions, 9845 flow [2024-11-28 04:16:36,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5953, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9845, PETRI_PLACES=256, PETRI_TRANSITIONS=577} [2024-11-28 04:16:36,141 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 209 predicate places. [2024-11-28 04:16:36,141 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 577 transitions, 9845 flow [2024-11-28 04:16:36,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.5) internal successors, (328), 16 states have internal predecessors, (328), 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 04:16:36,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:36,142 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 04:16:36,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:16:36,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:16:36,342 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:36,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1675387951, now seen corresponding path program 4 times [2024-11-28 04:16:36,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:36,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886075779] [2024-11-28 04:16:36,343 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:16:36,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:36,365 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:16:36,365 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:36,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:36,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886075779] [2024-11-28 04:16:36,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886075779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:36,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364608226] [2024-11-28 04:16:36,678 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:16:36,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:36,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:36,680 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:36,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:16:36,765 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:16:36,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:36,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:16:36,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:36,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:37,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364608226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:37,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:37,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-11-28 04:16:37,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356762053] [2024-11-28 04:16:37,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:37,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:16:37,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:37,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:16:37,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:16:37,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:37,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 577 transitions, 9845 flow. Second operand has 19 states, 19 states have (on average 20.894736842105264) internal successors, (397), 19 states have internal predecessors, (397), 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 04:16:37,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:37,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:37,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:46,977 INFO L124 PetriNetUnfolderBase]: 5593/9990 cut-off events. [2024-11-28 04:16:46,978 INFO L125 PetriNetUnfolderBase]: For 124724/124724 co-relation queries the response was YES. [2024-11-28 04:16:47,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64926 conditions, 9990 events. 5593/9990 cut-off events. For 124724/124724 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 70637 event pairs, 406 based on Foata normal form. 63/10053 useless extension candidates. Maximal degree in co-relation 64656. Up to 1807 conditions per place. [2024-11-28 04:16:47,094 INFO L140 encePairwiseOnDemand]: 28/48 looper letters, 456 selfloop transitions, 528 changer transitions 481/1466 dead transitions. [2024-11-28 04:16:47,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1466 transitions, 23346 flow [2024-11-28 04:16:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-28 04:16:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2024-11-28 04:16:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 2235 transitions. [2024-11-28 04:16:47,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5477941176470589 [2024-11-28 04:16:47,100 INFO L175 Difference]: Start difference. First operand has 256 places, 577 transitions, 9845 flow. Second operand 85 states and 2235 transitions. [2024-11-28 04:16:47,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 1466 transitions, 23346 flow [2024-11-28 04:16:48,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1466 transitions, 22361 flow, removed 323 selfloop flow, removed 11 redundant places. [2024-11-28 04:16:48,174 INFO L231 Difference]: Finished difference. Result has 361 places, 708 transitions, 12145 flow [2024-11-28 04:16:48,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9113, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=12145, PETRI_PLACES=361, PETRI_TRANSITIONS=708} [2024-11-28 04:16:48,175 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 314 predicate places. [2024-11-28 04:16:48,175 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 708 transitions, 12145 flow [2024-11-28 04:16:48,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 20.894736842105264) internal successors, (397), 19 states have internal predecessors, (397), 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 04:16:48,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:48,175 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:48,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:16:48,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:16:48,376 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:16:48,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:48,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1188467650, now seen corresponding path program 4 times [2024-11-28 04:16:48,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:48,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860120814] [2024-11-28 04:16:48,377 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:16:48,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:48,394 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:16:48,394 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:16:48,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:48,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860120814] [2024-11-28 04:16:48,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860120814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:48,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096319425] [2024-11-28 04:16:48,629 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:16:48,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:48,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:48,632 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:48,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:16:48,793 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:16:48,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:48,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:16:48,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:16:48,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:16:49,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096319425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:49,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:49,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2024-11-28 04:16:49,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627737336] [2024-11-28 04:16:49,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:49,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:16:49,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:49,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:16:49,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:16:49,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:16:49,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 708 transitions, 12145 flow. Second operand has 20 states, 20 states have (on average 19.85) internal successors, (397), 20 states have internal predecessors, (397), 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 04:16:49,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:49,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:16:49,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:59,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:05,728 INFO L124 PetriNetUnfolderBase]: 4001/7274 cut-off events. [2024-11-28 04:17:05,728 INFO L125 PetriNetUnfolderBase]: For 117836/117836 co-relation queries the response was YES. [2024-11-28 04:17:05,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53354 conditions, 7274 events. 4001/7274 cut-off events. For 117836/117836 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 49042 event pairs, 633 based on Foata normal form. 9/7283 useless extension candidates. Maximal degree in co-relation 53069. Up to 1778 conditions per place. [2024-11-28 04:17:05,850 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 546 selfloop transitions, 516 changer transitions 2/1065 dead transitions. [2024-11-28 04:17:05,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 1065 transitions, 19331 flow [2024-11-28 04:17:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 04:17:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 04:17:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 746 transitions. [2024-11-28 04:17:05,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5359195402298851 [2024-11-28 04:17:05,852 INFO L175 Difference]: Start difference. First operand has 361 places, 708 transitions, 12145 flow. Second operand 29 states and 746 transitions. [2024-11-28 04:17:05,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 1065 transitions, 19331 flow [2024-11-28 04:17:06,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 1065 transitions, 16731 flow, removed 1127 selfloop flow, removed 32 redundant places. [2024-11-28 04:17:06,925 INFO L231 Difference]: Finished difference. Result has 336 places, 839 transitions, 14030 flow [2024-11-28 04:17:06,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10417, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=387, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14030, PETRI_PLACES=336, PETRI_TRANSITIONS=839} [2024-11-28 04:17:06,926 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 289 predicate places. [2024-11-28 04:17:06,926 INFO L471 AbstractCegarLoop]: Abstraction has has 336 places, 839 transitions, 14030 flow [2024-11-28 04:17:06,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.85) internal successors, (397), 20 states have internal predecessors, (397), 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 04:17:06,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:06,927 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:06,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:17:07,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:07,131 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:17:07,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash 300731808, now seen corresponding path program 5 times [2024-11-28 04:17:07,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:07,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121993045] [2024-11-28 04:17:07,132 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:17:07,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:07,147 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 04:17:07,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:17:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:07,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121993045] [2024-11-28 04:17:07,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121993045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:07,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140099593] [2024-11-28 04:17:07,594 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:17:07,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:07,597 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:07,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:17:07,694 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 04:17:07,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:07,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:17:07,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:07,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:17:07,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:17:08,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140099593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:08,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:08,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-28 04:17:08,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453020849] [2024-11-28 04:17:08,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:08,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:17:08,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:08,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:17:08,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:17:08,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:17:08,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 839 transitions, 14030 flow. Second operand has 21 states, 21 states have (on average 19.80952380952381) internal successors, (416), 21 states have internal predecessors, (416), 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 04:17:08,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:08,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:17:08,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:28,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:45,668 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification. DAG size of input: 30 DAG size of output: 30 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:18:05,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:18:08,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:18:24,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:18:27,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:18:42,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:18:53,918 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 33 DAG size of output: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:19:02,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:13,804 INFO L124 PetriNetUnfolderBase]: 5803/10569 cut-off events. [2024-11-28 04:19:13,804 INFO L125 PetriNetUnfolderBase]: For 141298/141298 co-relation queries the response was YES. [2024-11-28 04:19:13,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72305 conditions, 10569 events. 5803/10569 cut-off events. For 141298/141298 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 77495 event pairs, 794 based on Foata normal form. 43/10612 useless extension candidates. Maximal degree in co-relation 72067. Up to 2606 conditions per place. [2024-11-28 04:19:13,955 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 630 selfloop transitions, 1086 changer transitions 0/1717 dead transitions. [2024-11-28 04:19:13,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1717 transitions, 29168 flow [2024-11-28 04:19:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 04:19:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-28 04:19:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1553 transitions. [2024-11-28 04:19:13,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5676169590643275 [2024-11-28 04:19:13,958 INFO L175 Difference]: Start difference. First operand has 336 places, 839 transitions, 14030 flow. Second operand 57 states and 1553 transitions. [2024-11-28 04:19:13,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1717 transitions, 29168 flow [2024-11-28 04:19:15,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 1717 transitions, 28008 flow, removed 539 selfloop flow, removed 11 redundant places. [2024-11-28 04:19:15,680 INFO L231 Difference]: Finished difference. Result has 408 places, 1436 transitions, 26337 flow [2024-11-28 04:19:15,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13392, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=569, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=26337, PETRI_PLACES=408, PETRI_TRANSITIONS=1436} [2024-11-28 04:19:15,681 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 361 predicate places. [2024-11-28 04:19:15,682 INFO L471 AbstractCegarLoop]: Abstraction has has 408 places, 1436 transitions, 26337 flow [2024-11-28 04:19:15,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.80952380952381) internal successors, (416), 21 states have internal predecessors, (416), 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 04:19:15,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:19:15,682 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:15,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:19:15,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 04:19:15,882 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:19:15,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash 108385649, now seen corresponding path program 5 times [2024-11-28 04:19:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:15,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758878529] [2024-11-28 04:19:15,883 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:19:15,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:15,894 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:19:15,894 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:19:16,465 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 04:19:16,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:16,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758878529] [2024-11-28 04:19:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758878529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:19:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541775568] [2024-11-28 04:19:16,466 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:19:16,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:16,468 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:16,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:19:16,550 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:19:16,550 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:19:16,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:19:16,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:16,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:19:16,838 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 04:19:16,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:19:17,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2024-11-28 04:19:17,562 INFO L349 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2024-11-28 04:19:17,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 111 [2024-11-28 04:19:18,594 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 04:19:18,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541775568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:19:18,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:19:18,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 26 [2024-11-28 04:19:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274527898] [2024-11-28 04:19:18,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:19:18,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:19:18,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:18,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:19:18,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:19:19,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-11-28 04:19:19,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 1436 transitions, 26337 flow. Second operand has 27 states, 27 states have (on average 22.444444444444443) internal successors, (606), 27 states have internal predecessors, (606), 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 04:19:19,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:19:19,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-11-28 04:19:19,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:19:25,636 INFO L124 PetriNetUnfolderBase]: 6115/11360 cut-off events. [2024-11-28 04:19:25,636 INFO L125 PetriNetUnfolderBase]: For 172623/172706 co-relation queries the response was YES. [2024-11-28 04:19:25,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84562 conditions, 11360 events. 6115/11360 cut-off events. For 172623/172706 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 85759 event pairs, 846 based on Foata normal form. 14/11346 useless extension candidates. Maximal degree in co-relation 84284. Up to 8640 conditions per place. [2024-11-28 04:19:25,818 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 1314 selfloop transitions, 201 changer transitions 92/1635 dead transitions. [2024-11-28 04:19:25,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 1635 transitions, 32641 flow [2024-11-28 04:19:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:19:25,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 04:19:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 369 transitions. [2024-11-28 04:19:25,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5913461538461539 [2024-11-28 04:19:25,819 INFO L175 Difference]: Start difference. First operand has 408 places, 1436 transitions, 26337 flow. Second operand 13 states and 369 transitions. [2024-11-28 04:19:25,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 1635 transitions, 32641 flow [2024-11-28 04:19:28,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 1635 transitions, 30985 flow, removed 772 selfloop flow, removed 4 redundant places. [2024-11-28 04:19:28,684 INFO L231 Difference]: Finished difference. Result has 419 places, 1476 transitions, 26236 flow [2024-11-28 04:19:28,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=24937, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=26236, PETRI_PLACES=419, PETRI_TRANSITIONS=1476} [2024-11-28 04:19:28,686 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 372 predicate places. [2024-11-28 04:19:28,686 INFO L471 AbstractCegarLoop]: Abstraction has has 419 places, 1476 transitions, 26236 flow [2024-11-28 04:19:28,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 22.444444444444443) internal successors, (606), 27 states have internal predecessors, (606), 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 04:19:28,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:19:28,687 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:28,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:19:28,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:28,888 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:19:28,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:28,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1953449575, now seen corresponding path program 6 times [2024-11-28 04:19:28,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:28,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795071109] [2024-11-28 04:19:28,888 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:19:28,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:28,900 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 04:19:28,901 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:19:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:19:29,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:29,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795071109] [2024-11-28 04:19:29,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795071109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:29,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:29,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:19:29,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423718913] [2024-11-28 04:19:29,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:29,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:19:29,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:29,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:19:29,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:19:29,138 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:19:29,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 1476 transitions, 26236 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 04:19:29,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:19:29,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:19:29,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:19:34,578 INFO L124 PetriNetUnfolderBase]: 6343/11361 cut-off events. [2024-11-28 04:19:34,578 INFO L125 PetriNetUnfolderBase]: For 164908/164908 co-relation queries the response was YES. [2024-11-28 04:19:34,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83375 conditions, 11361 events. 6343/11361 cut-off events. For 164908/164908 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 82514 event pairs, 2554 based on Foata normal form. 20/11381 useless extension candidates. Maximal degree in co-relation 83195. Up to 8901 conditions per place. [2024-11-28 04:19:34,778 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 1368 selfloop transitions, 149 changer transitions 0/1518 dead transitions. [2024-11-28 04:19:34,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1518 transitions, 29867 flow [2024-11-28 04:19:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:19:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:19:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-11-28 04:19:34,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-28 04:19:34,780 INFO L175 Difference]: Start difference. First operand has 419 places, 1476 transitions, 26236 flow. Second operand 7 states and 204 transitions. [2024-11-28 04:19:34,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1518 transitions, 29867 flow [2024-11-28 04:19:37,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1518 transitions, 29623 flow, removed 98 selfloop flow, removed 8 redundant places. [2024-11-28 04:19:37,383 INFO L231 Difference]: Finished difference. Result has 389 places, 1485 transitions, 26575 flow [2024-11-28 04:19:37,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=25935, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26575, PETRI_PLACES=389, PETRI_TRANSITIONS=1485} [2024-11-28 04:19:37,384 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 342 predicate places. [2024-11-28 04:19:37,385 INFO L471 AbstractCegarLoop]: Abstraction has has 389 places, 1485 transitions, 26575 flow [2024-11-28 04:19:37,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 04:19:37,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:19:37,385 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:37,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 04:19:37,385 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:19:37,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:37,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1887305065, now seen corresponding path program 7 times [2024-11-28 04:19:37,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:37,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852829509] [2024-11-28 04:19:37,386 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:19:37,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:19:37,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:37,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852829509] [2024-11-28 04:19:37,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852829509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:19:37,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217052723] [2024-11-28 04:19:37,649 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:19:37,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:37,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:37,651 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:37,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:19:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:37,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:19:37,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:19:37,822 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:19:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:19:37,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217052723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:19:37,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:19:37,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-28 04:19:37,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243168313] [2024-11-28 04:19:37,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:19:37,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:19:37,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:37,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:19:37,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:19:37,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:19:37,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1485 transitions, 26575 flow. Second operand has 16 states, 16 states have (on average 20.625) internal successors, (330), 16 states have internal predecessors, (330), 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 04:19:37,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:19:37,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:19:37,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:19:50,598 WARN L286 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 30 DAG size of output: 25 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:19:54,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:01,927 INFO L124 PetriNetUnfolderBase]: 8136/14696 cut-off events. [2024-11-28 04:20:01,927 INFO L125 PetriNetUnfolderBase]: For 213037/213037 co-relation queries the response was YES. [2024-11-28 04:20:02,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107332 conditions, 14696 events. 8136/14696 cut-off events. For 213037/213037 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 114155 event pairs, 1369 based on Foata normal form. 34/14730 useless extension candidates. Maximal degree in co-relation 107160. Up to 5407 conditions per place. [2024-11-28 04:20:02,262 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 988 selfloop transitions, 1244 changer transitions 1/2234 dead transitions. [2024-11-28 04:20:02,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 2234 transitions, 43248 flow [2024-11-28 04:20:02,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 04:20:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 04:20:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 787 transitions. [2024-11-28 04:20:02,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5653735632183908 [2024-11-28 04:20:02,264 INFO L175 Difference]: Start difference. First operand has 389 places, 1485 transitions, 26575 flow. Second operand 29 states and 787 transitions. [2024-11-28 04:20:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 2234 transitions, 43248 flow [2024-11-28 04:20:05,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 2234 transitions, 42858 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 04:20:05,979 INFO L231 Difference]: Finished difference. Result has 430 places, 1978 transitions, 40293 flow [2024-11-28 04:20:05,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=26260, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=808, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=40293, PETRI_PLACES=430, PETRI_TRANSITIONS=1978} [2024-11-28 04:20:05,980 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 383 predicate places. [2024-11-28 04:20:05,980 INFO L471 AbstractCegarLoop]: Abstraction has has 430 places, 1978 transitions, 40293 flow [2024-11-28 04:20:05,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.625) internal successors, (330), 16 states have internal predecessors, (330), 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 04:20:05,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:20:05,980 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:05,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:20:06,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:06,181 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:20:06,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1924751736, now seen corresponding path program 6 times [2024-11-28 04:20:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297121443] [2024-11-28 04:20:06,181 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:20:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:06,197 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 04:20:06,198 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:20:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:20:06,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:20:06,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297121443] [2024-11-28 04:20:06,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297121443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:20:06,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780132415] [2024-11-28 04:20:06,658 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:20:06,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:06,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:06,663 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:06,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:20:06,779 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 04:20:06,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:20:06,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:20:06,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:20:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:20:06,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:20:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:20:07,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780132415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:20:07,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:20:07,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2024-11-28 04:20:07,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013835945] [2024-11-28 04:20:07,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:20:07,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:20:07,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:20:07,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:20:07,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:20:07,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:20:07,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1978 transitions, 40293 flow. Second operand has 22 states, 22 states have (on average 19.863636363636363) internal successors, (437), 22 states have internal predecessors, (437), 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 04:20:07,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:20:07,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:20:07,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:20:14,571 WARN L286 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 36 DAG size of output: 33 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:20:22,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:40,709 WARN L286 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 36 DAG size of output: 34 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:20:53,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:59,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:00,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:06,329 INFO L124 PetriNetUnfolderBase]: 9816/17753 cut-off events. [2024-11-28 04:21:06,329 INFO L125 PetriNetUnfolderBase]: For 328734/328734 co-relation queries the response was YES. [2024-11-28 04:21:06,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143363 conditions, 17753 events. 9816/17753 cut-off events. For 328734/328734 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 143613 event pairs, 2043 based on Foata normal form. 43/17796 useless extension candidates. Maximal degree in co-relation 143174. Up to 8013 conditions per place. [2024-11-28 04:21:06,734 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 947 selfloop transitions, 2027 changer transitions 0/2975 dead transitions. [2024-11-28 04:21:06,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 2975 transitions, 64267 flow [2024-11-28 04:21:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 04:21:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-28 04:21:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1389 transitions. [2024-11-28 04:21:06,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5459905660377359 [2024-11-28 04:21:06,737 INFO L175 Difference]: Start difference. First operand has 430 places, 1978 transitions, 40293 flow. Second operand 53 states and 1389 transitions. [2024-11-28 04:21:06,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 2975 transitions, 64267 flow [2024-11-28 04:21:14,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 2975 transitions, 62238 flow, removed 537 selfloop flow, removed 14 redundant places. [2024-11-28 04:21:14,725 INFO L231 Difference]: Finished difference. Result has 497 places, 2685 transitions, 61147 flow [2024-11-28 04:21:14,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=38594, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=61147, PETRI_PLACES=497, PETRI_TRANSITIONS=2685} [2024-11-28 04:21:14,727 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 450 predicate places. [2024-11-28 04:21:14,728 INFO L471 AbstractCegarLoop]: Abstraction has has 497 places, 2685 transitions, 61147 flow [2024-11-28 04:21:14,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 19.863636363636363) internal successors, (437), 22 states have internal predecessors, (437), 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 04:21:14,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:21:14,728 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:14,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:21:14,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0996146-fdc2-4f0a-ba0c-ebf0d1b14862/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 04:21:14,933 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 04:21:14,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:14,933 INFO L85 PathProgramCache]: Analyzing trace with hash -736169823, now seen corresponding path program 8 times [2024-11-28 04:21:14,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:14,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223530543] [2024-11-28 04:21:14,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:21:14,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:14,944 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:21:14,945 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:21:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:21:15,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:15,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223530543] [2024-11-28 04:21:15,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223530543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:15,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:15,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:21:15,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89466435] [2024-11-28 04:21:15,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:15,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:21:15,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:15,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:21:15,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:21:15,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 04:21:15,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 2685 transitions, 61147 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 04:21:15,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:21:15,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 04:21:15,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:21:18,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []