./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/list1.i --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_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/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_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/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_78b0d277-c76a-4782-8a13-745e18f593b8/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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:36:46,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:36:46,132 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:36:46,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:36:46,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:36:46,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:36:46,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:36:46,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:36:46,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:36:46,185 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:36:46,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:36:46,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:36:46,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:36:46,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:36:46,187 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:36:46,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:36:46,187 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:36:46,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:36:46,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:36:46,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:36:46,188 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:36:46,188 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:36:46,188 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:36:46,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:36:46,188 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:36:46,188 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:36:46,188 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:36:46,189 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:36:46,189 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:36:46,190 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:36:46,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:36:46,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:36:46,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:36:46,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:36:46,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:36:46,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:36:46,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:36:46,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:36:46,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:36:46,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:36:46,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:36:46,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:36:46,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:36:46,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:36:46,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:36:46,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:36:46,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:36:46,194 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_78b0d277-c76a-4782-8a13-745e18f593b8/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 -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2024-11-28 02:36:46,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:36:46,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:36:46,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:36:46,594 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:36:46,595 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:36:46,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-memsafety/list1.i [2024-11-28 02:36:50,123 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data/668027322/befeebd5bf29468b9f3e5ad59ef7391e/FLAG7fdca214f [2024-11-28 02:36:50,570 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:36:50,570 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/sv-benchmarks/c/pthread-memsafety/list1.i [2024-11-28 02:36:50,599 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data/668027322/befeebd5bf29468b9f3e5ad59ef7391e/FLAG7fdca214f [2024-11-28 02:36:50,618 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data/668027322/befeebd5bf29468b9f3e5ad59ef7391e [2024-11-28 02:36:50,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:36:50,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:36:50,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:36:50,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:36:50,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:36:50,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:36:50" (1/1) ... [2024-11-28 02:36:50,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8d3ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:50, skipping insertion in model container [2024-11-28 02:36:50,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:36:50" (1/1) ... [2024-11-28 02:36:50,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:36:51,214 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 02:36:51,222 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 02:36:51,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:36:51,243 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:36:51,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:36:51,369 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:36:51,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51 WrapperNode [2024-11-28 02:36:51,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:36:51,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:36:51,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:36:51,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:36:51,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,452 INFO L138 Inliner]: procedures = 264, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2024-11-28 02:36:51,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:36:51,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:36:51,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:36:51,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:36:51,467 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,473 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,492 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [3, 8]. 73 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 3 writes are split as follows [1, 2]. [2024-11-28 02:36:51,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,503 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:36:51,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:36:51,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:36:51,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:36:51,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (1/1) ... [2024-11-28 02:36:51,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:36:51,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:36:51,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:36:51,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:36:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:36:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:36:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:36:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:36:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:36:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:36:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:36:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:36:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:36:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2024-11-28 02:36:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2024-11-28 02:36:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure build [2024-11-28 02:36:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2024-11-28 02:36:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:36:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:36:51,616 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:36:51,834 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:36:51,837 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:36:52,312 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:36:52,312 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:36:52,486 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:36:52,487 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:36:52,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:36:52 BoogieIcfgContainer [2024-11-28 02:36:52,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:36:52,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:36:52,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:36:52,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:36:52,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:36:50" (1/3) ... [2024-11-28 02:36:52,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22213ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:36:52, skipping insertion in model container [2024-11-28 02:36:52,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:51" (2/3) ... [2024-11-28 02:36:52,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22213ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:36:52, skipping insertion in model container [2024-11-28 02:36:52,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:36:52" (3/3) ... [2024-11-28 02:36:52,501 INFO L128 eAbstractionObserver]: Analyzing ICFG list1.i [2024-11-28 02:36:52,521 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:36:52,523 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG list1.i that has 3 procedures, 70 locations, 1 initial locations, 2 loop locations, and 30 error locations. [2024-11-28 02:36:52,523 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:36:52,653 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:36:52,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 162 flow [2024-11-28 02:36:52,784 INFO L124 PetriNetUnfolderBase]: 5/72 cut-off events. [2024-11-28 02:36:52,789 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:36:52,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 72 events. 5/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 206 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-11-28 02:36:52,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 162 flow [2024-11-28 02:36:52,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 71 transitions, 154 flow [2024-11-28 02:36:52,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:36:52,831 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;@6b01aa55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:36:52,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-28 02:36:52,840 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:36:52,841 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-28 02:36:52,842 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:36:52,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:36:52,843 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:36:52,844 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:36:52,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:36:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash 274039522, now seen corresponding path program 1 times [2024-11-28 02:36:52,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:36:52,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360264649] [2024-11-28 02:36:52,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:36:52,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:36:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:53,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:36:53,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360264649] [2024-11-28 02:36:53,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360264649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:36:53,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:36:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:36:53,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852171668] [2024-11-28 02:36:53,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:36:53,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:36:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:36:53,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:36:53,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:36:53,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-28 02:36:53,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:53,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:36:53,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-28 02:36:53,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:36:53,942 INFO L124 PetriNetUnfolderBase]: 25/168 cut-off events. [2024-11-28 02:36:53,942 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:36:53,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 168 events. 25/168 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 631 event pairs, 4 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 140. Up to 31 conditions per place. [2024-11-28 02:36:53,950 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 28 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2024-11-28 02:36:53,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 231 flow [2024-11-28 02:36:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:36:53,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:36:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-28 02:36:53,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-28 02:36:53,980 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 154 flow. Second operand 4 states and 212 transitions. [2024-11-28 02:36:53,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 231 flow [2024-11-28 02:36:53,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 221 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:36:53,996 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 159 flow [2024-11-28 02:36:53,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-11-28 02:36:54,004 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2024-11-28 02:36:54,004 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 159 flow [2024-11-28 02:36:54,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:54,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:36:54,005 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:36:54,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:36:54,006 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:36:54,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:36:54,007 INFO L85 PathProgramCache]: Analyzing trace with hash 274039523, now seen corresponding path program 1 times [2024-11-28 02:36:54,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:36:54,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185926992] [2024-11-28 02:36:54,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:36:54,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:36:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:54,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:36:54,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185926992] [2024-11-28 02:36:54,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185926992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:36:54,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:36:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:36:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326708300] [2024-11-28 02:36:54,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:36:54,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:36:54,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:36:54,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:36:54,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:36:54,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 74 [2024-11-28 02:36:54,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:54,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:36:54,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 74 [2024-11-28 02:36:54,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:36:54,612 INFO L124 PetriNetUnfolderBase]: 24/163 cut-off events. [2024-11-28 02:36:54,612 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-28 02:36:54,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 163 events. 24/163 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 605 event pairs, 8 based on Foata normal form. 4/123 useless extension candidates. Maximal degree in co-relation 83. Up to 48 conditions per place. [2024-11-28 02:36:54,614 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 25 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-11-28 02:36:54,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 215 flow [2024-11-28 02:36:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:36:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:36:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-28 02:36:54,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.706081081081081 [2024-11-28 02:36:54,617 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 159 flow. Second operand 4 states and 209 transitions. [2024-11-28 02:36:54,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 215 flow [2024-11-28 02:36:54,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:36:54,622 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 156 flow [2024-11-28 02:36:54,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-11-28 02:36:54,624 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -3 predicate places. [2024-11-28 02:36:54,625 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 156 flow [2024-11-28 02:36:54,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:54,626 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:36:54,626 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:36:54,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:36:54,627 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:36:54,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:36:54,629 INFO L85 PathProgramCache]: Analyzing trace with hash -94709142, now seen corresponding path program 1 times [2024-11-28 02:36:54,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:36:54,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667820638] [2024-11-28 02:36:54,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:36:54,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:36:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:54,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:36:54,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667820638] [2024-11-28 02:36:54,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667820638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:36:54,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:36:54,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:36:54,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775828667] [2024-11-28 02:36:54,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:36:54,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:36:54,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:36:54,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:36:54,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:36:54,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 74 [2024-11-28 02:36:54,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:54,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:36:54,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 74 [2024-11-28 02:36:54,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:36:54,972 INFO L124 PetriNetUnfolderBase]: 26/157 cut-off events. [2024-11-28 02:36:54,972 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-28 02:36:54,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 157 events. 26/157 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 557 event pairs, 12 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 151. Up to 52 conditions per place. [2024-11-28 02:36:54,974 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 27 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-28 02:36:54,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 208 flow [2024-11-28 02:36:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:36:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:36:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-28 02:36:54,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-11-28 02:36:54,977 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 156 flow. Second operand 3 states and 155 transitions. [2024-11-28 02:36:54,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 208 flow [2024-11-28 02:36:54,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:36:54,980 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 146 flow [2024-11-28 02:36:54,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-28 02:36:54,982 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2024-11-28 02:36:54,982 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 146 flow [2024-11-28 02:36:54,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:54,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:36:54,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:36:54,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:36:54,983 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:36:54,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:36:54,984 INFO L85 PathProgramCache]: Analyzing trace with hash -94709141, now seen corresponding path program 1 times [2024-11-28 02:36:54,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:36:54,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456846575] [2024-11-28 02:36:54,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:36:54,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:36:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:55,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:36:55,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456846575] [2024-11-28 02:36:55,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456846575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:36:55,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:36:55,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:36:55,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47581570] [2024-11-28 02:36:55,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:36:55,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:36:55,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:36:55,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:36:55,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:36:55,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 74 [2024-11-28 02:36:55,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:55,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:36:55,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 74 [2024-11-28 02:36:55,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:36:55,299 INFO L124 PetriNetUnfolderBase]: 24/147 cut-off events. [2024-11-28 02:36:55,299 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-28 02:36:55,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 147 events. 24/147 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 513 event pairs, 12 based on Foata normal form. 4/119 useless extension candidates. Maximal degree in co-relation 151. Up to 52 conditions per place. [2024-11-28 02:36:55,301 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 25 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-28 02:36:55,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 194 flow [2024-11-28 02:36:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:36:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:36:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-28 02:36:55,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-28 02:36:55,303 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 146 flow. Second operand 3 states and 159 transitions. [2024-11-28 02:36:55,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 194 flow [2024-11-28 02:36:55,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:36:55,306 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 138 flow [2024-11-28 02:36:55,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-11-28 02:36:55,308 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-11-28 02:36:55,308 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 138 flow [2024-11-28 02:36:55,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:55,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:36:55,308 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:36:55,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:36:55,309 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:36:55,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:36:55,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1138600917, now seen corresponding path program 1 times [2024-11-28 02:36:55,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:36:55,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285804364] [2024-11-28 02:36:55,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:36:55,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:36:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:55,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:36:55,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285804364] [2024-11-28 02:36:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285804364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:36:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:36:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:36:55,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750495479] [2024-11-28 02:36:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:36:55,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:36:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:36:55,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:36:55,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:36:56,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-28 02:36:56,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 138 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:56,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:36:56,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-28 02:36:56,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:36:56,860 INFO L124 PetriNetUnfolderBase]: 35/174 cut-off events. [2024-11-28 02:36:56,860 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-28 02:36:56,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 174 events. 35/174 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 612 event pairs, 19 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 151. Up to 73 conditions per place. [2024-11-28 02:36:56,865 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 32 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-11-28 02:36:56,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 260 flow [2024-11-28 02:36:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:36:56,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:36:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 483 transitions. [2024-11-28 02:36:56,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6527027027027027 [2024-11-28 02:36:56,869 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 138 flow. Second operand 10 states and 483 transitions. [2024-11-28 02:36:56,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 260 flow [2024-11-28 02:36:56,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:36:56,876 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 209 flow [2024-11-28 02:36:56,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=209, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-28 02:36:56,879 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2024-11-28 02:36:56,883 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 209 flow [2024-11-28 02:36:56,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:36:56,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:36:56,885 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:36:56,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:36:56,885 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:36:56,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:36:56,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1512697173, now seen corresponding path program 1 times [2024-11-28 02:36:56,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:36:56,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406787829] [2024-11-28 02:36:56,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:36:56,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:36:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:57,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:36:57,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406787829] [2024-11-28 02:36:57,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406787829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:36:57,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550679199] [2024-11-28 02:36:57,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:36:57,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:36:57,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:36:57,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:36:57,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:36:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:57,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:36:57,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:36:58,090 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 02:36:58,163 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-28 02:36:58,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 24 [2024-11-28 02:36:58,216 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 25 treesize of output 13 [2024-11-28 02:36:58,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:36:58,344 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 25 treesize of output 13 [2024-11-28 02:36:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:58,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:36:58,525 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 38 treesize of output 34 [2024-11-28 02:36:59,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:36:59,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 135 treesize of output 339 [2024-11-28 02:37:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:00,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550679199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:37:00,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:37:00,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-28 02:37:00,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572991662] [2024-11-28 02:37:00,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:37:00,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:37:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:00,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:37:00,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:37:02,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 74 [2024-11-28 02:37:02,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 209 flow. Second operand has 16 states, 16 states have (on average 40.75) internal successors, (652), 16 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:02,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:02,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 74 [2024-11-28 02:37:02,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:02,548 INFO L124 PetriNetUnfolderBase]: 35/172 cut-off events. [2024-11-28 02:37:02,548 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-28 02:37:02,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 172 events. 35/172 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 594 event pairs, 5 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 180. Up to 31 conditions per place. [2024-11-28 02:37:02,550 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 37 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-11-28 02:37:02,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 322 flow [2024-11-28 02:37:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:37:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:37:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 360 transitions. [2024-11-28 02:37:02,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2024-11-28 02:37:02,553 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 209 flow. Second operand 8 states and 360 transitions. [2024-11-28 02:37:02,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 322 flow [2024-11-28 02:37:02,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:37:02,557 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 224 flow [2024-11-28 02:37:02,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-11-28 02:37:02,558 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2024-11-28 02:37:02,558 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 224 flow [2024-11-28 02:37:02,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.75) internal successors, (652), 16 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:02,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:02,560 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:02,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:37:02,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:02,761 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:02,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:02,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1512697172, now seen corresponding path program 1 times [2024-11-28 02:37:02,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:02,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770413398] [2024-11-28 02:37:02,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:02,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:03,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770413398] [2024-11-28 02:37:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770413398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:37:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71070987] [2024-11-28 02:37:03,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:03,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:03,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:03,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:03,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:37:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:03,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 02:37:03,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:03,834 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 11 treesize of output 7 [2024-11-28 02:37:03,842 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 02:37:03,884 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-28 02:37:03,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-28 02:37:03,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 02:37:03,939 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 25 treesize of output 13 [2024-11-28 02:37:03,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:37:03,992 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 11 treesize of output 7 [2024-11-28 02:37:04,050 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 25 treesize of output 13 [2024-11-28 02:37:04,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 02:37:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:04,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:37:04,340 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 32 treesize of output 28 [2024-11-28 02:37:04,363 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 66 treesize of output 62 [2024-11-28 02:37:04,369 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 102 treesize of output 94 [2024-11-28 02:37:04,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:37:04,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 134 [2024-11-28 02:37:04,657 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 68 treesize of output 64 [2024-11-28 02:37:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:04,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71070987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:37:04,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:37:04,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-28 02:37:04,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338659803] [2024-11-28 02:37:04,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:37:04,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:37:04,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:04,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:37:04,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:37:07,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 74 [2024-11-28 02:37:07,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 224 flow. Second operand has 19 states, 19 states have (on average 37.63157894736842) internal successors, (715), 19 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:07,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:07,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 74 [2024-11-28 02:37:07,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:07,877 INFO L124 PetriNetUnfolderBase]: 33/168 cut-off events. [2024-11-28 02:37:07,877 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-28 02:37:07,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 168 events. 33/168 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 585 event pairs, 5 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 188. Up to 31 conditions per place. [2024-11-28 02:37:07,880 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 35 selfloop transitions, 10 changer transitions 0/75 dead transitions. [2024-11-28 02:37:07,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 75 transitions, 333 flow [2024-11-28 02:37:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:37:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:37:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 334 transitions. [2024-11-28 02:37:07,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5641891891891891 [2024-11-28 02:37:07,882 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 224 flow. Second operand 8 states and 334 transitions. [2024-11-28 02:37:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 75 transitions, 333 flow [2024-11-28 02:37:07,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 299 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-28 02:37:07,889 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 208 flow [2024-11-28 02:37:07,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-11-28 02:37:07,890 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2024-11-28 02:37:07,890 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 208 flow [2024-11-28 02:37:07,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 37.63157894736842) internal successors, (715), 19 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:07,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:07,891 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 02:37:07,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:37:08,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:08,095 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:08,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1751862984, now seen corresponding path program 1 times [2024-11-28 02:37:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:08,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943810680] [2024-11-28 02:37:08,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:08,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:08,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943810680] [2024-11-28 02:37:08,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943810680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:08,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:08,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:37:08,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430386636] [2024-11-28 02:37:08,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:08,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:37:08,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:08,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:37:08,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:37:08,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-28 02:37:08,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:08,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:08,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-28 02:37:08,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:08,468 INFO L124 PetriNetUnfolderBase]: 21/77 cut-off events. [2024-11-28 02:37:08,468 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-28 02:37:08,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 77 events. 21/77 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 14 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 69. Up to 51 conditions per place. [2024-11-28 02:37:08,469 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 25 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2024-11-28 02:37:08,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 36 transitions, 196 flow [2024-11-28 02:37:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:37:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:37:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-28 02:37:08,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6054054054054054 [2024-11-28 02:37:08,470 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 208 flow. Second operand 5 states and 224 transitions. [2024-11-28 02:37:08,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 36 transitions, 196 flow [2024-11-28 02:37:08,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 175 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 02:37:08,472 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 123 flow [2024-11-28 02:37:08,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-11-28 02:37:08,473 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -28 predicate places. [2024-11-28 02:37:08,473 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 123 flow [2024-11-28 02:37:08,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:08,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:08,473 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:08,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:37:08,474 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:08,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1374230450, now seen corresponding path program 1 times [2024-11-28 02:37:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746276009] [2024-11-28 02:37:08,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:37:08,493 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:37:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:37:08,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:37:08,544 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:37:08,546 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (60 of 61 remaining) [2024-11-28 02:37:08,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 61 remaining) [2024-11-28 02:37:08,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 61 remaining) [2024-11-28 02:37:08,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 61 remaining) [2024-11-28 02:37:08,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 61 remaining) [2024-11-28 02:37:08,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 61 remaining) [2024-11-28 02:37:08,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 61 remaining) [2024-11-28 02:37:08,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 61 remaining) [2024-11-28 02:37:08,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 61 remaining) [2024-11-28 02:37:08,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 61 remaining) [2024-11-28 02:37:08,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 61 remaining) [2024-11-28 02:37:08,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 61 remaining) [2024-11-28 02:37:08,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 61 remaining) [2024-11-28 02:37:08,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 61 remaining) [2024-11-28 02:37:08,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 61 remaining) [2024-11-28 02:37:08,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 61 remaining) [2024-11-28 02:37:08,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 61 remaining) [2024-11-28 02:37:08,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 61 remaining) [2024-11-28 02:37:08,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 61 remaining) [2024-11-28 02:37:08,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 61 remaining) [2024-11-28 02:37:08,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 61 remaining) [2024-11-28 02:37:08,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 61 remaining) [2024-11-28 02:37:08,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 61 remaining) [2024-11-28 02:37:08,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (37 of 61 remaining) [2024-11-28 02:37:08,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (36 of 61 remaining) [2024-11-28 02:37:08,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (35 of 61 remaining) [2024-11-28 02:37:08,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (34 of 61 remaining) [2024-11-28 02:37:08,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (32 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (31 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (30 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (29 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 61 remaining) [2024-11-28 02:37:08,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (7 of 61 remaining) [2024-11-28 02:37:08,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 61 remaining) [2024-11-28 02:37:08,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 61 remaining) [2024-11-28 02:37:08,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (4 of 61 remaining) [2024-11-28 02:37:08,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 61 remaining) [2024-11-28 02:37:08,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 61 remaining) [2024-11-28 02:37:08,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 61 remaining) [2024-11-28 02:37:08,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 61 remaining) [2024-11-28 02:37:08,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:37:08,556 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:08,612 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:37:08,613 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:37:08,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:37:08 BasicIcfg [2024-11-28 02:37:08,619 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:37:08,619 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:37:08,619 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:37:08,619 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:37:08,620 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:36:52" (3/4) ... [2024-11-28 02:37:08,622 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 02:37:08,623 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:37:08,624 INFO L158 Benchmark]: Toolchain (without parser) took 18000.39ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 92.5MB in the beginning and 125.1MB in the end (delta: -32.6MB). Peak memory consumption was 201.9MB. Max. memory is 16.1GB. [2024-11-28 02:37:08,625 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 167.8MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:37:08,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 741.73ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 65.1MB in the end (delta: 27.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 02:37:08,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.39ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 63.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:37:08,626 INFO L158 Benchmark]: Boogie Preprocessor took 60.27ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 61.0MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:37:08,627 INFO L158 Benchmark]: RCFGBuilder took 971.70ms. Allocated memory is still 117.4MB. Free memory was 61.0MB in the beginning and 87.6MB in the end (delta: -26.6MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2024-11-28 02:37:08,627 INFO L158 Benchmark]: TraceAbstraction took 16128.88ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 87.0MB in the beginning and 125.2MB in the end (delta: -38.1MB). Peak memory consumption was 196.9MB. Max. memory is 16.1GB. [2024-11-28 02:37:08,629 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 352.3MB. Free memory was 125.2MB in the beginning and 125.1MB in the end (delta: 46.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:37:08,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 167.8MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 741.73ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 65.1MB in the end (delta: 27.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.39ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 63.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.27ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 61.0MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 971.70ms. Allocated memory is still 117.4MB. Free memory was 61.0MB in the beginning and 87.6MB in the end (delta: -26.6MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16128.88ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 87.0MB in the beginning and 125.2MB in the end (delta: -38.1MB). Peak memory consumption was 196.9MB. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 352.3MB. Free memory was 125.2MB in the beginning and 125.1MB in the end (delta: 46.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1069]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1069. Possible FailurePath: [L1070] 0 pthread_t id1, id2; [L1071] 0 struct item *list = ((void *)0); [L1072] FCALL, FORK 0 pthread_create(&id1, ((void *)0), build, list) VAL [\old(argc)=9, \old(argv)={10:11}, argc=9, id1=-1, list={0:0}] [L1048] 1 struct item *list = (struct item *)plist; [L1048] 1 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={2:0}, plist={0:0}] [L1050] CALL 1 append(&list) [L1042] 1 struct item *elem = malloc(sizeof *elem); [L1043] EXPR 1 \read(**plist) VAL [\old(plist)={0:0}, list={2:0}, plist={0:0}] [L1043] 1 elem->next = *plist [L1044] EXPR 1 elem->next VAL [\old(plist)={0:0}, list={2:0}, plist={0:0}] [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [\old(plist)={2:0}, elem={-1:0}, plist={2:0}] [L1044] 1 elem->data = (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1045] 1 *plist = elem [L1050] RET 1 append(&list) [L1051] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1073] FCALL, JOIN 1 pthread_join(id1, ((void *)0)) VAL [\old(argc)=9, \old(argv)={10:11}, argc=9, id1=-1, list={0:0}] [L1074] FCALL, FORK 0 pthread_create(&id2, ((void *)0), delete, list) VAL [\old(argc)=9, \old(argv)={10:11}, \old(plist)={0:0}, argc=9, id1=-1, id2=0, list={0:0}] [L1055] 2 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1056] COND FALSE 2 !(\read(*list)) VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1062] COND FALSE 2 !(\read(*list)) [L1075] FCALL, JOIN 2 pthread_join(id2, ((void *)0)) VAL [\old(argc)=9, \old(argv)={10:11}, \old(plist)={0:0}, \result={0:0}, argc=9, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] [L1076] 0 return 0; VAL [\old(argc)=9, \old(argv)={10:11}, \old(plist)={0:0}, \result=0, \result={0:0}, argc=9, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 130 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.9s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1493 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1195 mSDsluCounter, 1340 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1293 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5132 IncrementalHoareTripleChecker+Invalid, 5198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 47 mSDtfsCounter, 5132 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=6, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 147 ConstructedInterpolants, 6 QuantifiedInterpolants, 1562 SizeOfPredicates, 37 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 7/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 02:37:08,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/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_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:37:11,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:37:11,896 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 02:37:11,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:37:11,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:37:11,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:37:11,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:37:11,954 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:37:11,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:37:11,955 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:37:11,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:37:11,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:37:11,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:37:11,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:37:11,957 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:37:11,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:37:11,958 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:37:11,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:37:11,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:37:11,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:37:11,959 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:37:11,959 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:37:11,959 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:37:11,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:37:11,960 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:37:11,960 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:37:11,960 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:37:11,960 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:37:11,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:37:11,960 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:37:11,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:37:11,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:37:11,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:11,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:11,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:11,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:11,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:37:11,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:11,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:11,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:11,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:11,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:37:11,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:37:11,963 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:37:11,963 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:37:11,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:37:11,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:37:11,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:37:11,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:37:11,964 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_78b0d277-c76a-4782-8a13-745e18f593b8/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 -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2024-11-28 02:37:12,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:37:12,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:37:12,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:37:12,381 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:37:12,381 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:37:12,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-memsafety/list1.i [2024-11-28 02:37:16,129 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data/4d3df7a84/282c272cd4c84a259af0e5c058558dee/FLAGbd4969914 [2024-11-28 02:37:16,510 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:37:16,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/sv-benchmarks/c/pthread-memsafety/list1.i [2024-11-28 02:37:16,531 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data/4d3df7a84/282c272cd4c84a259af0e5c058558dee/FLAGbd4969914 [2024-11-28 02:37:16,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/data/4d3df7a84/282c272cd4c84a259af0e5c058558dee [2024-11-28 02:37:16,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:37:16,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:37:16,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:16,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:37:16,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:37:16,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:16" (1/1) ... [2024-11-28 02:37:16,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a6da68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:16, skipping insertion in model container [2024-11-28 02:37:16,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:16" (1/1) ... [2024-11-28 02:37:16,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:37:17,303 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 02:37:17,312 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 02:37:17,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:17,341 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:37:17,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:17,551 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:37:17,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17 WrapperNode [2024-11-28 02:37:17,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:17,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:17,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:37:17,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:37:17,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,638 INFO L138 Inliner]: procedures = 265, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2024-11-28 02:37:17,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:17,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:37:17,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:37:17,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:37:17,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,694 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [3, 8]. 73 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 3 writes are split as follows [1, 2]. [2024-11-28 02:37:17,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,720 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:37:17,746 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:37:17,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:37:17,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:37:17,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (1/1) ... [2024-11-28 02:37:17,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:17,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:37:17,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:37:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:37:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:37:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:37:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:37:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:37:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:37:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:37:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:37:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:37:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2024-11-28 02:37:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2024-11-28 02:37:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure build [2024-11-28 02:37:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2024-11-28 02:37:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:37:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:37:17,850 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:37:18,146 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:37:18,149 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:37:18,727 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:37:18,728 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:37:18,927 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:37:18,927 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:37:18,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:18 BoogieIcfgContainer [2024-11-28 02:37:18,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:37:18,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:37:18,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:37:18,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:37:18,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:37:16" (1/3) ... [2024-11-28 02:37:18,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637e76f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:37:18, skipping insertion in model container [2024-11-28 02:37:18,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:17" (2/3) ... [2024-11-28 02:37:18,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637e76f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:37:18, skipping insertion in model container [2024-11-28 02:37:18,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:18" (3/3) ... [2024-11-28 02:37:18,944 INFO L128 eAbstractionObserver]: Analyzing ICFG list1.i [2024-11-28 02:37:18,965 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:37:18,967 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG list1.i that has 3 procedures, 70 locations, 1 initial locations, 2 loop locations, and 30 error locations. [2024-11-28 02:37:18,968 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:37:19,172 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:37:19,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 162 flow [2024-11-28 02:37:19,294 INFO L124 PetriNetUnfolderBase]: 5/72 cut-off events. [2024-11-28 02:37:19,298 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:37:19,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 72 events. 5/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 206 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-11-28 02:37:19,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 162 flow [2024-11-28 02:37:19,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 71 transitions, 154 flow [2024-11-28 02:37:19,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:37:19,342 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;@3939e60e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:37:19,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-28 02:37:19,351 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:37:19,354 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-28 02:37:19,355 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:37:19,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:19,356 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:37:19,356 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:19,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash 274039522, now seen corresponding path program 1 times [2024-11-28 02:37:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:37:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12412826] [2024-11-28 02:37:19,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:19,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:19,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:19,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:19,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:37:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:19,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:37:19,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:19,665 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 6 treesize of output 7 [2024-11-28 02:37:19,786 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 02:37:19,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 02:37:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:19,818 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:19,818 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:37:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12412826] [2024-11-28 02:37:19,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12412826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:19,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:19,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:37:19,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687603006] [2024-11-28 02:37:19,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:19,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:37:19,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:37:19,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:37:19,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:37:20,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-28 02:37:20,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:20,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:20,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-28 02:37:20,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:20,293 INFO L124 PetriNetUnfolderBase]: 25/168 cut-off events. [2024-11-28 02:37:20,293 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:37:20,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 168 events. 25/168 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 631 event pairs, 4 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 140. Up to 31 conditions per place. [2024-11-28 02:37:20,297 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 28 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2024-11-28 02:37:20,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 231 flow [2024-11-28 02:37:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:37:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:37:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-28 02:37:20,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-28 02:37:20,326 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 154 flow. Second operand 4 states and 212 transitions. [2024-11-28 02:37:20,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 231 flow [2024-11-28 02:37:20,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 221 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:37:20,342 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 159 flow [2024-11-28 02:37:20,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-11-28 02:37:20,355 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2024-11-28 02:37:20,355 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 159 flow [2024-11-28 02:37:20,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:20,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:20,357 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:37:20,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:37:20,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:20,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:20,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash 274039523, now seen corresponding path program 1 times [2024-11-28 02:37:20,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:37:20,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160116354] [2024-11-28 02:37:20,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:20,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:20,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:20,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:20,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:37:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:20,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:37:20,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:20,724 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 6 treesize of output 5 [2024-11-28 02:37:20,746 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 6 treesize of output 7 [2024-11-28 02:37:20,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:37:20,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 02:37:20,876 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:37:20,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:37:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:20,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:20,899 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:37:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160116354] [2024-11-28 02:37:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160116354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:20,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:37:20,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680059733] [2024-11-28 02:37:20,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:20,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:37:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:37:20,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:37:20,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:37:21,150 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 74 [2024-11-28 02:37:21,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:21,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:21,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 74 [2024-11-28 02:37:21,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:21,442 INFO L124 PetriNetUnfolderBase]: 27/176 cut-off events. [2024-11-28 02:37:21,442 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-28 02:37:21,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 176 events. 27/176 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 680 event pairs, 4 based on Foata normal form. 4/134 useless extension candidates. Maximal degree in co-relation 83. Up to 42 conditions per place. [2024-11-28 02:37:21,445 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 29 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2024-11-28 02:37:21,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 247 flow [2024-11-28 02:37:21,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:37:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:37:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-28 02:37:21,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7331081081081081 [2024-11-28 02:37:21,448 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 159 flow. Second operand 4 states and 217 transitions. [2024-11-28 02:37:21,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 247 flow [2024-11-28 02:37:21,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:37:21,452 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 175 flow [2024-11-28 02:37:21,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-11-28 02:37:21,453 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2024-11-28 02:37:21,453 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 175 flow [2024-11-28 02:37:21,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:21,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:21,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:37:21,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:37:21,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:21,655 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:21,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash -94709142, now seen corresponding path program 1 times [2024-11-28 02:37:21,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:37:21,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249054526] [2024-11-28 02:37:21,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:21,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:21,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:21,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:21,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:37:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:21,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:37:21,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:21,817 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 6 treesize of output 7 [2024-11-28 02:37:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:21,834 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:21,834 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:37:21,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249054526] [2024-11-28 02:37:21,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249054526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:21,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:21,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:37:21,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507993052] [2024-11-28 02:37:21,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:21,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:37:21,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:37:21,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:37:21,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:37:21,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 74 [2024-11-28 02:37:21,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:21,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:21,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 74 [2024-11-28 02:37:21,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:22,130 INFO L124 PetriNetUnfolderBase]: 28/167 cut-off events. [2024-11-28 02:37:22,131 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-28 02:37:22,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 167 events. 28/167 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 611 event pairs, 12 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 155. Up to 54 conditions per place. [2024-11-28 02:37:22,134 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 27 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-28 02:37:22,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 229 flow [2024-11-28 02:37:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:37:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:37:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-28 02:37:22,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-11-28 02:37:22,140 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 175 flow. Second operand 3 states and 155 transitions. [2024-11-28 02:37:22,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 229 flow [2024-11-28 02:37:22,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:37:22,147 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 164 flow [2024-11-28 02:37:22,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-28 02:37:22,150 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2024-11-28 02:37:22,151 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 164 flow [2024-11-28 02:37:22,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:22,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:22,151 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:37:22,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:37:22,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:22,352 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:22,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash -94709141, now seen corresponding path program 1 times [2024-11-28 02:37:22,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:37:22,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034291286] [2024-11-28 02:37:22,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:22,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:22,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:22,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:22,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:37:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:22,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:37:22,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:22,508 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 6 treesize of output 5 [2024-11-28 02:37:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:22,540 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:22,540 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:37:22,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034291286] [2024-11-28 02:37:22,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034291286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:22,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:22,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:37:22,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070019393] [2024-11-28 02:37:22,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:22,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:37:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:37:22,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:37:22,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:37:22,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 74 [2024-11-28 02:37:22,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:22,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:22,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 74 [2024-11-28 02:37:22,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:22,832 INFO L124 PetriNetUnfolderBase]: 26/155 cut-off events. [2024-11-28 02:37:22,832 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-28 02:37:22,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 155 events. 26/155 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 552 event pairs, 12 based on Foata normal form. 4/127 useless extension candidates. Maximal degree in co-relation 151. Up to 54 conditions per place. [2024-11-28 02:37:22,834 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 25 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-28 02:37:22,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 214 flow [2024-11-28 02:37:22,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:37:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:37:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-28 02:37:22,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-28 02:37:22,837 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 164 flow. Second operand 3 states and 159 transitions. [2024-11-28 02:37:22,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 214 flow [2024-11-28 02:37:22,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:37:22,840 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 156 flow [2024-11-28 02:37:22,840 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-11-28 02:37:22,841 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2024-11-28 02:37:22,842 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 156 flow [2024-11-28 02:37:22,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:22,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:22,842 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:22,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:37:23,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:23,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:23,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:23,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1138602037, now seen corresponding path program 1 times [2024-11-28 02:37:23,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:37:23,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469374686] [2024-11-28 02:37:23,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:23,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:23,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:23,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:23,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:37:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:23,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:37:23,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:23,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:37:23,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 02:37:23,396 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:37:23,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:37:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:23,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:23,444 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:37:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469374686] [2024-11-28 02:37:23,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469374686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:23,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:23,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:37:23,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096210436] [2024-11-28 02:37:23,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:23,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:37:23,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:37:23,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:37:23,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:37:23,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2024-11-28 02:37:23,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:23,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:23,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2024-11-28 02:37:23,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:23,991 INFO L124 PetriNetUnfolderBase]: 27/154 cut-off events. [2024-11-28 02:37:23,991 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-28 02:37:23,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 154 events. 27/154 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 540 event pairs, 8 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 151. Up to 50 conditions per place. [2024-11-28 02:37:23,994 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 26 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-11-28 02:37:23,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 220 flow [2024-11-28 02:37:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:37:23,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:37:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2024-11-28 02:37:23,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-28 02:37:23,997 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 156 flow. Second operand 5 states and 240 transitions. [2024-11-28 02:37:23,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 220 flow [2024-11-28 02:37:23,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:37:24,001 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 156 flow [2024-11-28 02:37:24,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-28 02:37:24,006 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2024-11-28 02:37:24,006 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 156 flow [2024-11-28 02:37:24,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:24,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:24,008 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:24,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:37:24,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:24,209 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:24,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1138600917, now seen corresponding path program 1 times [2024-11-28 02:37:24,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:37:24,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28549709] [2024-11-28 02:37:24,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:24,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:24,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:24,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:24,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:37:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:24,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:37:24,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:24,528 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 11 treesize of output 7 [2024-11-28 02:37:24,539 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 11 treesize of output 7 [2024-11-28 02:37:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:24,629 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:24,629 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:37:24,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28549709] [2024-11-28 02:37:24,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28549709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:24,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:24,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:37:24,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104360742] [2024-11-28 02:37:24,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:24,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:37:24,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:37:24,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:37:24,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:37:25,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-28 02:37:25,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:25,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:25,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-28 02:37:25,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:25,959 INFO L124 PetriNetUnfolderBase]: 36/177 cut-off events. [2024-11-28 02:37:25,959 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-28 02:37:25,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 177 events. 36/177 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 634 event pairs, 20 based on Foata normal form. 2/147 useless extension candidates. Maximal degree in co-relation 151. Up to 76 conditions per place. [2024-11-28 02:37:25,961 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 33 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2024-11-28 02:37:25,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 288 flow [2024-11-28 02:37:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:37:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:37:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 483 transitions. [2024-11-28 02:37:25,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6527027027027027 [2024-11-28 02:37:25,964 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 156 flow. Second operand 10 states and 483 transitions. [2024-11-28 02:37:25,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 74 transitions, 288 flow [2024-11-28 02:37:25,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 272 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:37:25,967 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 227 flow [2024-11-28 02:37:25,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=227, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-11-28 02:37:25,971 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2024-11-28 02:37:25,972 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 227 flow [2024-11-28 02:37:25,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:25,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:25,973 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:25,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:37:26,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:26,178 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:26,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1512697173, now seen corresponding path program 1 times [2024-11-28 02:37:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:37:26,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436539494] [2024-11-28 02:37:26,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:26,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:26,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:26,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:26,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:37:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:26,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:37:26,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:26,441 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 02:37:26,514 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-28 02:37:26,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-28 02:37:26,560 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 27 treesize of output 15 [2024-11-28 02:37:26,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:37:26,703 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 27 treesize of output 15 [2024-11-28 02:37:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:26,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:37:26,937 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 36 treesize of output 32 [2024-11-28 02:37:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:27,135 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:37:27,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436539494] [2024-11-28 02:37:27,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436539494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:37:27,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:37:27,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2024-11-28 02:37:27,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980970675] [2024-11-28 02:37:27,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:37:27,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:37:27,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:37:27,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:37:27,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:37:31,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:37:32,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-28 02:37:32,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 227 flow. Second operand has 13 states, 13 states have (on average 31.846153846153847) internal successors, (414), 13 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:32,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:32,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-28 02:37:32,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:33,328 INFO L124 PetriNetUnfolderBase]: 44/183 cut-off events. [2024-11-28 02:37:33,328 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-28 02:37:33,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 183 events. 44/183 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 629 event pairs, 10 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 218. Up to 49 conditions per place. [2024-11-28 02:37:33,330 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 47 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-11-28 02:37:33,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 368 flow [2024-11-28 02:37:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:37:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:37:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 298 transitions. [2024-11-28 02:37:33,333 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-11-28 02:37:33,333 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 227 flow. Second operand 8 states and 298 transitions. [2024-11-28 02:37:33,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 368 flow [2024-11-28 02:37:33,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:37:33,340 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 244 flow [2024-11-28 02:37:33,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-11-28 02:37:33,344 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-11-28 02:37:33,344 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 244 flow [2024-11-28 02:37:33,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 31.846153846153847) internal successors, (414), 13 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:33,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:33,345 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:33,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:37:33,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:33,546 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:37:33,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:33,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1512697172, now seen corresponding path program 1 times [2024-11-28 02:37:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:37:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962529067] [2024-11-28 02:37:33,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:33,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:33,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:33,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:33,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:37:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:33,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:37:33,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:33,825 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 11 treesize of output 7 [2024-11-28 02:37:33,836 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 02:37:33,935 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-28 02:37:33,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-28 02:37:33,983 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 02:37:33,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 02:37:34,041 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 25 treesize of output 13 [2024-11-28 02:37:34,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:37:34,103 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 11 treesize of output 7 [2024-11-28 02:37:34,194 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 25 treesize of output 13 [2024-11-28 02:37:34,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 02:37:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:34,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:37:34,838 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 40 treesize of output 32 [2024-11-28 02:37:34,875 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 66 treesize of output 62 [2024-11-28 02:37:34,882 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 102 treesize of output 94 [2024-11-28 02:37:37,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:37:37,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 405 treesize of output 599 [2024-11-28 02:37:40,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:37:40,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 328 treesize of output 758 [2024-11-28 02:37:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:51,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:37:51,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962529067] [2024-11-28 02:37:51,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962529067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:37:51,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:37:51,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-28 02:37:51,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210316688] [2024-11-28 02:37:51,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:37:51,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:37:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:37:51,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:37:51,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:37:57,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:38:03,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:38:08,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:38:13,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:38:14,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-11-28 02:38:14,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 244 flow. Second operand has 16 states, 16 states have (on average 24.6875) internal successors, (395), 16 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:14,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:38:14,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-11-28 02:38:14,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:38:17,024 INFO L124 PetriNetUnfolderBase]: 44/181 cut-off events. [2024-11-28 02:38:17,025 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-28 02:38:17,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 181 events. 44/181 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 606 event pairs, 12 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 232. Up to 54 conditions per place. [2024-11-28 02:38:17,027 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 45 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2024-11-28 02:38:17,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 379 flow [2024-11-28 02:38:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:38:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:38:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2024-11-28 02:38:17,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-11-28 02:38:17,030 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 244 flow. Second operand 8 states and 240 transitions. [2024-11-28 02:38:17,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 379 flow [2024-11-28 02:38:17,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 344 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-28 02:38:17,038 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 229 flow [2024-11-28 02:38:17,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=229, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-11-28 02:38:17,042 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2024-11-28 02:38:17,042 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 229 flow [2024-11-28 02:38:17,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.6875) internal successors, (395), 16 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:17,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:38:17,043 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 02:38:17,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:38:17,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:17,248 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:38:17,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1751862985, now seen corresponding path program 1 times [2024-11-28 02:38:17,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:38:17,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960373036] [2024-11-28 02:38:17,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:17,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:17,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:17,251 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:17,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:38:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:17,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:38:17,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:38:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:38:17,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:38:17,509 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:38:17,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960373036] [2024-11-28 02:38:17,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960373036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:17,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:17,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:38:17,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916452348] [2024-11-28 02:38:17,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:17,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:38:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:38:17,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:38:17,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:38:17,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-28 02:38:17,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:17,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:38:17,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-28 02:38:17,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:38:17,837 INFO L124 PetriNetUnfolderBase]: 22/80 cut-off events. [2024-11-28 02:38:17,837 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-28 02:38:17,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 80 events. 22/80 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 15 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 80. Up to 54 conditions per place. [2024-11-28 02:38:17,838 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 26 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-11-28 02:38:17,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 37 transitions, 219 flow [2024-11-28 02:38:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:38:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:38:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-28 02:38:17,841 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6054054054054054 [2024-11-28 02:38:17,841 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 229 flow. Second operand 5 states and 224 transitions. [2024-11-28 02:38:17,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 37 transitions, 219 flow [2024-11-28 02:38:17,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 195 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 02:38:17,844 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 141 flow [2024-11-28 02:38:17,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-11-28 02:38:17,845 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -26 predicate places. [2024-11-28 02:38:17,845 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 141 flow [2024-11-28 02:38:17,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:17,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:38:17,845 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:17,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:38:18,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:18,046 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-28 02:38:18,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:18,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1449093220, now seen corresponding path program 1 times [2024-11-28 02:38:18,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:38:18,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932903814] [2024-11-28 02:38:18,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:18,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:18,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:18,049 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:18,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:38:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:38:18,187 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:38:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:38:18,299 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-28 02:38:18,300 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:38:18,301 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (60 of 61 remaining) [2024-11-28 02:38:18,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 61 remaining) [2024-11-28 02:38:18,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 61 remaining) [2024-11-28 02:38:18,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 61 remaining) [2024-11-28 02:38:18,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 61 remaining) [2024-11-28 02:38:18,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 61 remaining) [2024-11-28 02:38:18,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 61 remaining) [2024-11-28 02:38:18,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 61 remaining) [2024-11-28 02:38:18,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 61 remaining) [2024-11-28 02:38:18,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 61 remaining) [2024-11-28 02:38:18,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 61 remaining) [2024-11-28 02:38:18,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 61 remaining) [2024-11-28 02:38:18,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 61 remaining) [2024-11-28 02:38:18,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 61 remaining) [2024-11-28 02:38:18,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 61 remaining) [2024-11-28 02:38:18,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 61 remaining) [2024-11-28 02:38:18,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 61 remaining) [2024-11-28 02:38:18,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 61 remaining) [2024-11-28 02:38:18,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 61 remaining) [2024-11-28 02:38:18,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 61 remaining) [2024-11-28 02:38:18,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 61 remaining) [2024-11-28 02:38:18,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 61 remaining) [2024-11-28 02:38:18,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 61 remaining) [2024-11-28 02:38:18,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (37 of 61 remaining) [2024-11-28 02:38:18,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (36 of 61 remaining) [2024-11-28 02:38:18,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (35 of 61 remaining) [2024-11-28 02:38:18,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (34 of 61 remaining) [2024-11-28 02:38:18,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 61 remaining) [2024-11-28 02:38:18,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (32 of 61 remaining) [2024-11-28 02:38:18,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (31 of 61 remaining) [2024-11-28 02:38:18,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (30 of 61 remaining) [2024-11-28 02:38:18,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (29 of 61 remaining) [2024-11-28 02:38:18,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 61 remaining) [2024-11-28 02:38:18,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 61 remaining) [2024-11-28 02:38:18,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 61 remaining) [2024-11-28 02:38:18,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 61 remaining) [2024-11-28 02:38:18,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 61 remaining) [2024-11-28 02:38:18,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 61 remaining) [2024-11-28 02:38:18,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 61 remaining) [2024-11-28 02:38:18,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 61 remaining) [2024-11-28 02:38:18,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 61 remaining) [2024-11-28 02:38:18,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 61 remaining) [2024-11-28 02:38:18,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 61 remaining) [2024-11-28 02:38:18,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 61 remaining) [2024-11-28 02:38:18,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 61 remaining) [2024-11-28 02:38:18,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 61 remaining) [2024-11-28 02:38:18,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 61 remaining) [2024-11-28 02:38:18,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 61 remaining) [2024-11-28 02:38:18,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 61 remaining) [2024-11-28 02:38:18,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 61 remaining) [2024-11-28 02:38:18,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 61 remaining) [2024-11-28 02:38:18,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 61 remaining) [2024-11-28 02:38:18,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 61 remaining) [2024-11-28 02:38:18,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (7 of 61 remaining) [2024-11-28 02:38:18,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 61 remaining) [2024-11-28 02:38:18,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 61 remaining) [2024-11-28 02:38:18,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (4 of 61 remaining) [2024-11-28 02:38:18,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 61 remaining) [2024-11-28 02:38:18,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 61 remaining) [2024-11-28 02:38:18,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 61 remaining) [2024-11-28 02:38:18,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 61 remaining) [2024-11-28 02:38:18,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:38:18,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:18,513 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:18,584 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:38:18,584 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:38:18,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:38:18 BasicIcfg [2024-11-28 02:38:18,593 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:38:18,594 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:38:18,594 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:38:18,595 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:38:18,595 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:18" (3/4) ... [2024-11-28 02:38:18,598 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 02:38:18,599 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:38:18,600 INFO L158 Benchmark]: Toolchain (without parser) took 61882.06ms. Allocated memory was 83.9MB in the beginning and 151.0MB in the end (delta: 67.1MB). Free memory was 58.4MB in the beginning and 71.2MB in the end (delta: -12.8MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-11-28 02:38:18,600 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 83.9MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:38:18,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 834.05ms. Allocated memory is still 83.9MB. Free memory was 58.4MB in the beginning and 30.7MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 02:38:18,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.97ms. Allocated memory is still 83.9MB. Free memory was 30.7MB in the beginning and 28.6MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:38:18,602 INFO L158 Benchmark]: Boogie Preprocessor took 103.50ms. Allocated memory is still 83.9MB. Free memory was 28.6MB in the beginning and 26.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:38:18,603 INFO L158 Benchmark]: RCFGBuilder took 1182.03ms. Allocated memory is still 83.9MB. Free memory was 26.2MB in the beginning and 28.8MB in the end (delta: -2.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-28 02:38:18,604 INFO L158 Benchmark]: TraceAbstraction took 59662.39ms. Allocated memory was 83.9MB in the beginning and 151.0MB in the end (delta: 67.1MB). Free memory was 28.3MB in the beginning and 71.2MB in the end (delta: -42.9MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2024-11-28 02:38:18,605 INFO L158 Benchmark]: Witness Printer took 5.19ms. Allocated memory is still 151.0MB. Free memory was 71.2MB in the beginning and 71.2MB in the end (delta: 11.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:38:18,606 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 83.9MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 834.05ms. Allocated memory is still 83.9MB. Free memory was 58.4MB in the beginning and 30.7MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.97ms. Allocated memory is still 83.9MB. Free memory was 30.7MB in the beginning and 28.6MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.50ms. Allocated memory is still 83.9MB. Free memory was 28.6MB in the beginning and 26.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1182.03ms. Allocated memory is still 83.9MB. Free memory was 26.2MB in the beginning and 28.8MB in the end (delta: -2.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 59662.39ms. Allocated memory was 83.9MB in the beginning and 151.0MB in the end (delta: 67.1MB). Free memory was 28.3MB in the beginning and 71.2MB in the end (delta: -42.9MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. * Witness Printer took 5.19ms. Allocated memory is still 151.0MB. Free memory was 71.2MB in the beginning and 71.2MB in the end (delta: 11.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1069]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1069. Possible FailurePath: [L1070] 0 pthread_t id1, id2; [L1071] 0 struct item *list = ((void *)0); [L1072] FCALL, FORK 0 pthread_create(&id1, ((void *)0), build, list) VAL [\old(argc)=0, \old(argv)={0:0}, argc=0, id1=-1, list={0:0}] [L1048] 1 struct item *list = (struct item *)plist; [L1048] 1 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={4:0}, plist={0:0}] [L1050] CALL 1 append(&list) [L1042] 1 struct item *elem = malloc(sizeof *elem); [L1043] EXPR 1 \read(**plist) VAL [\old(plist)={0:0}, list={4:0}, plist={0:0}] [L1043] 1 elem->next = *plist [L1044] EXPR 1 elem->next VAL [\old(plist)={0:0}, list={4:0}, plist={0:0}] [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [\old(plist)={4:0}, elem={1:0}, plist={4:0}] [L1044] 1 elem->data = (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1045] 1 *plist = elem [L1050] RET 1 append(&list) [L1051] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1073] FCALL, JOIN 1 pthread_join(id1, ((void *)0)) VAL [\old(argc)=0, \old(argv)={0:0}, argc=0, id1=-1, list={0:0}] [L1074] FCALL, FORK 0 pthread_create(&id2, ((void *)0), delete, list) VAL [\old(argc)=0, \old(argv)={0:0}, \old(plist)={0:0}, argc=0, id1=-1, id2=0, list={0:0}] [L1055] 2 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1056] COND FALSE 2 !(\read(*list)) VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1062] COND FALSE 2 !(\read(*list)) [L1075] FCALL, JOIN 2 pthread_join(id2, ((void *)0)) VAL [\old(argc)=0, \old(argv)={0:0}, \old(plist)={0:0}, \result={0:0}, argc=0, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] [L1076] 0 return 0; VAL [\old(argc)=0, \old(argv)={0:0}, \old(plist)={0:0}, \result=0, \result={0:0}, argc=0, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 130 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 59.3s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 1338 SdHoareTripleChecker+Valid, 33.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 998 mSDsluCounter, 1154 SdHoareTripleChecker+Invalid, 31.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1109 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3880 IncrementalHoareTripleChecker+Invalid, 3969 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 45 mSDtfsCounter, 3880 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=7, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 4 QuantifiedInterpolants, 1520 SizeOfPredicates, 69 NumberOfNonLiveVariables, 746 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 4/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 02:38:18,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78b0d277-c76a-4782-8a13-745e18f593b8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample