./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.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_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/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_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/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_c56d8e98-fd6a-475a-8422-29439f6fde9b/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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:20:57,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:20:57,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 20:20:57,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:20:57,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:20:57,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:20:57,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:20:57,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:20:57,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:20:57,542 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:20:57,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:20:57,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:20:57,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:20:57,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:20:57,543 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:20:57,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:20:57,543 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:20:57,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:20:57,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:20:57,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:20:57,544 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 20:20:57,544 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 20:20:57,544 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 20:20:57,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:20:57,544 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:20:57,544 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:20:57,544 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:20:57,545 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:20:57,545 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:20:57,545 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:20:57,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:20:57,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:20:57,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:20:57,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:20:57,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:20:57,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:20:57,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:20:57,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:20:57,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:20:57,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:20:57,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:20:57,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:20:57,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:20:57,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:20:57,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:20:57,547 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:20:57,547 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:20:57,547 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_c56d8e98-fd6a-475a-8422-29439f6fde9b/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 -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2024-11-27 20:20:57,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:20:57,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:20:57,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:20:57,871 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:20:57,871 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:20:57,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-11-27 20:21:01,053 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/data/85ed9a58c/e8e091b4a83e4681aa638218a7ef7fa1/FLAGc83fdd454 [2024-11-27 20:21:01,438 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:21:01,439 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-11-27 20:21:01,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/data/85ed9a58c/e8e091b4a83e4681aa638218a7ef7fa1/FLAGc83fdd454 [2024-11-27 20:21:01,472 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/data/85ed9a58c/e8e091b4a83e4681aa638218a7ef7fa1 [2024-11-27 20:21:01,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:21:01,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:21:01,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:01,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:21:01,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:21:01,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:01" (1/1) ... [2024-11-27 20:21:01,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d5d1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:01, skipping insertion in model container [2024-11-27 20:21:01,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:01" (1/1) ... [2024-11-27 20:21:01,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:21:02,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:02,114 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:21:02,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:02,253 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:21:02,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02 WrapperNode [2024-11-27 20:21:02,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:02,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:02,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:21:02,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:21:02,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,332 INFO L138 Inliner]: procedures = 263, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2024-11-27 20:21:02,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:02,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:21:02,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:21:02,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:21:02,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,369 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-11-27 20:21:02,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,381 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:21:02,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:21:02,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:21:02,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:21:02,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (1/1) ... [2024-11-27 20:21:02,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:02,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:02,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:21:02,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:21:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 20:21:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:21:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:21:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 20:21:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:21:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-27 20:21:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-27 20:21:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:21:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:21:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:21:02,503 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:21:02,655 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:21:02,657 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:21:03,055 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:21:03,055 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:21:03,498 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:21:03,499 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-27 20:21:03,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:03 BoogieIcfgContainer [2024-11-27 20:21:03,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:21:03,502 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:21:03,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:21:03,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:21:03,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:21:01" (1/3) ... [2024-11-27 20:21:03,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0d3cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:03, skipping insertion in model container [2024-11-27 20:21:03,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:02" (2/3) ... [2024-11-27 20:21:03,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0d3cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:03, skipping insertion in model container [2024-11-27 20:21:03,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:03" (3/3) ... [2024-11-27 20:21:03,516 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2024-11-27 20:21:03,534 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:21:03,536 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_02-funloop_norace.i that has 2 procedures, 31 locations, 1 initial locations, 3 loop locations, and 9 error locations. [2024-11-27 20:21:03,537 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:21:03,655 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:21:03,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 70 flow [2024-11-27 20:21:03,753 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2024-11-27 20:21:03,757 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:21:03,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 32 events. 3/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-11-27 20:21:03,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 33 transitions, 70 flow [2024-11-27 20:21:03,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 32 transitions, 67 flow [2024-11-27 20:21:03,786 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:21:03,807 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;@47a949f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:21:03,807 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-27 20:21:03,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:21:03,820 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-11-27 20:21:03,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:21:03,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:03,823 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 20:21:03,824 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:03,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2073655235, now seen corresponding path program 1 times [2024-11-27 20:21:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:03,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129674077] [2024-11-27 20:21:03,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:04,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:04,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129674077] [2024-11-27 20:21:04,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129674077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:04,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:04,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:21:04,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235277953] [2024-11-27 20:21:04,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:04,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:04,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:04,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:04,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:21:04,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-27 20:21:04,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-27 20:21:04,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:04,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-27 20:21:04,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:04,504 INFO L124 PetriNetUnfolderBase]: 74/203 cut-off events. [2024-11-27 20:21:04,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:21:04,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 203 events. 74/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 913 event pairs, 56 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 342. Up to 149 conditions per place. [2024-11-27 20:21:04,512 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 20 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-27 20:21:04,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 113 flow [2024-11-27 20:21:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:21:04,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-27 20:21:04,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2024-11-27 20:21:04,534 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 67 flow. Second operand 3 states and 59 transitions. [2024-11-27 20:21:04,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 113 flow [2024-11-27 20:21:04,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:21:04,548 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 78 flow [2024-11-27 20:21:04,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-27 20:21:04,555 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-27 20:21:04,558 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 78 flow [2024-11-27 20:21:04,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-27 20:21:04,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:04,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:04,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:21:04,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:04,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash -204016993, now seen corresponding path program 1 times [2024-11-27 20:21:04,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:04,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101505843] [2024-11-27 20:21:04,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:04,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:04,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:04,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101505843] [2024-11-27 20:21:04,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101505843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:04,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046788115] [2024-11-27 20:21:04,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:04,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:04,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:04,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:04,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:21:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:04,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:04,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:21:04,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:04,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046788115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:04,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:04,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2024-11-27 20:21:04,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927256910] [2024-11-27 20:21:04,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:04,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:04,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:04,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:04,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:21:04,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-11-27 20:21:04,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-27 20:21:04,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:04,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-11-27 20:21:04,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:05,095 INFO L124 PetriNetUnfolderBase]: 74/199 cut-off events. [2024-11-27 20:21:05,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:21:05,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 199 events. 74/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 876 event pairs, 56 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 348. Up to 149 conditions per place. [2024-11-27 20:21:05,098 INFO L140 encePairwiseOnDemand]: 31/33 looper letters, 21 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2024-11-27 20:21:05,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 120 flow [2024-11-27 20:21:05,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:21:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-27 20:21:05,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-27 20:21:05,100 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 78 flow. Second operand 3 states and 55 transitions. [2024-11-27 20:21:05,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 120 flow [2024-11-27 20:21:05,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 116 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 20:21:05,102 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 74 flow [2024-11-27 20:21:05,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-11-27 20:21:05,103 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-27 20:21:05,103 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 74 flow [2024-11-27 20:21:05,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-27 20:21:05,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:05,104 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:05,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:05,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:05,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:05,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:05,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1523767520, now seen corresponding path program 1 times [2024-11-27 20:21:05,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:05,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421349306] [2024-11-27 20:21:05,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:05,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:05,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:05,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421349306] [2024-11-27 20:21:05,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421349306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:05,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117693159] [2024-11-27 20:21:05,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:05,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:05,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:05,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:05,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:21:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:05,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:21:05,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:05,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:21:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:05,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117693159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:21:05,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:21:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-27 20:21:05,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777319625] [2024-11-27 20:21:05,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:21:05,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:21:05,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:05,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:21:05,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:05,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-27 20:21:05,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-11-27 20:21:05,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:05,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-27 20:21:05,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:05,885 INFO L124 PetriNetUnfolderBase]: 74/202 cut-off events. [2024-11-27 20:21:05,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:21:05,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 202 events. 74/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 876 event pairs, 56 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 359. Up to 149 conditions per place. [2024-11-27 20:21:05,891 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 20 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-11-27 20:21:05,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 136 flow [2024-11-27 20:21:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:21:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:21:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-11-27 20:21:05,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-11-27 20:21:05,895 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 74 flow. Second operand 6 states and 100 transitions. [2024-11-27 20:21:05,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 136 flow [2024-11-27 20:21:05,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:21:05,898 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 109 flow [2024-11-27 20:21:05,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-27 20:21:05,899 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-11-27 20:21:05,900 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 109 flow [2024-11-27 20:21:05,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-11-27 20:21:05,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:05,900 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:05,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:06,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:06,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:06,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:06,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1994701828, now seen corresponding path program 2 times [2024-11-27 20:21:06,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:06,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724758376] [2024-11-27 20:21:06,106 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:21:06,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:06,152 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:21:06,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:21:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:21:06,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:06,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724758376] [2024-11-27 20:21:06,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724758376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:06,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:06,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:21:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097278838] [2024-11-27 20:21:06,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:06,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:21:06,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:06,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:21:06,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:21:06,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-27 20:21:06,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-27 20:21:06,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:06,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-27 20:21:06,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:06,535 INFO L124 PetriNetUnfolderBase]: 74/194 cut-off events. [2024-11-27 20:21:06,535 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:21:06,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 194 events. 74/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 788 event pairs, 16 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 362. Up to 90 conditions per place. [2024-11-27 20:21:06,540 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 31 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-27 20:21:06,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 191 flow [2024-11-27 20:21:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:21:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:21:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-11-27 20:21:06,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-27 20:21:06,544 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 109 flow. Second operand 4 states and 72 transitions. [2024-11-27 20:21:06,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 191 flow [2024-11-27 20:21:06,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 177 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-27 20:21:06,551 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 97 flow [2024-11-27 20:21:06,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-11-27 20:21:06,552 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-11-27 20:21:06,552 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 97 flow [2024-11-27 20:21:06,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-27 20:21:06,552 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:06,552 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:06,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:21:06,552 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:06,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1994701829, now seen corresponding path program 1 times [2024-11-27 20:21:06,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:06,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719492882] [2024-11-27 20:21:06,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:06,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:06,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:06,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719492882] [2024-11-27 20:21:06,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719492882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:06,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023459149] [2024-11-27 20:21:06,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:06,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:06,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:06,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:06,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:21:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:06,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:21:06,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:06,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:21:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023459149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:21:06,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:21:06,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-27 20:21:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787924742] [2024-11-27 20:21:06,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:21:06,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:21:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:06,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:21:06,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:21:06,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-27 20:21:06,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 97 flow. Second operand has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 13 states have internal predecessors, (174), 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) [2024-11-27 20:21:06,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:06,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-27 20:21:06,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:07,163 INFO L124 PetriNetUnfolderBase]: 74/200 cut-off events. [2024-11-27 20:21:07,167 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-27 20:21:07,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 200 events. 74/200 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 790 event pairs, 56 based on Foata normal form. 6/184 useless extension candidates. Maximal degree in co-relation 398. Up to 149 conditions per place. [2024-11-27 20:21:07,170 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 20 selfloop transitions, 11 changer transitions 0/39 dead transitions. [2024-11-27 20:21:07,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 39 transitions, 195 flow [2024-11-27 20:21:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:21:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:21:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2024-11-27 20:21:07,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-11-27 20:21:07,176 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 97 flow. Second operand 12 states and 181 transitions. [2024-11-27 20:21:07,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 39 transitions, 195 flow [2024-11-27 20:21:07,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 189 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:21:07,183 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 175 flow [2024-11-27 20:21:07,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2024-11-27 20:21:07,184 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2024-11-27 20:21:07,184 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 175 flow [2024-11-27 20:21:07,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 13 states have internal predecessors, (174), 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) [2024-11-27 20:21:07,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:07,184 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:07,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:21:07,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:07,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:07,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:07,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1632612731, now seen corresponding path program 2 times [2024-11-27 20:21:07,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:07,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994400263] [2024-11-27 20:21:07,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:21:07,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:07,412 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:21:07,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:21:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:07,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:07,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994400263] [2024-11-27 20:21:07,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994400263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:07,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:07,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:21:07,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668363960] [2024-11-27 20:21:07,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:07,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:21:07,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:07,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:21:07,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:21:07,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-27 20:21:07,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:21:07,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:07,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-27 20:21:07,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:07,934 INFO L124 PetriNetUnfolderBase]: 146/330 cut-off events. [2024-11-27 20:21:07,934 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-27 20:21:07,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 330 events. 146/330 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1243 event pairs, 72 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 677. Up to 194 conditions per place. [2024-11-27 20:21:07,937 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 53 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2024-11-27 20:21:07,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 337 flow [2024-11-27 20:21:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:21:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:21:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-11-27 20:21:07,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-27 20:21:07,941 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 175 flow. Second operand 5 states and 100 transitions. [2024-11-27 20:21:07,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 337 flow [2024-11-27 20:21:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 289 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-27 20:21:07,947 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 153 flow [2024-11-27 20:21:07,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2024-11-27 20:21:07,948 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2024-11-27 20:21:07,948 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 153 flow [2024-11-27 20:21:07,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:21:07,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:07,948 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:07,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:21:07,948 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:07,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1648239280, now seen corresponding path program 1 times [2024-11-27 20:21:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:07,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879428814] [2024-11-27 20:21:07,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:07,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:08,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:08,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879428814] [2024-11-27 20:21:08,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879428814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:08,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:08,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:21:08,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112951574] [2024-11-27 20:21:08,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:08,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:21:08,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:08,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:21:08,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:21:08,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-27 20:21:08,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-27 20:21:08,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:08,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-27 20:21:08,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:08,340 INFO L124 PetriNetUnfolderBase]: 128/323 cut-off events. [2024-11-27 20:21:08,340 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-11-27 20:21:08,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 323 events. 128/323 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1312 event pairs, 39 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 691. Up to 140 conditions per place. [2024-11-27 20:21:08,343 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2024-11-27 20:21:08,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 271 flow [2024-11-27 20:21:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:21:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:21:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-11-27 20:21:08,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-11-27 20:21:08,345 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 153 flow. Second operand 4 states and 71 transitions. [2024-11-27 20:21:08,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 271 flow [2024-11-27 20:21:08,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:21:08,348 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 151 flow [2024-11-27 20:21:08,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2024-11-27 20:21:08,349 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2024-11-27 20:21:08,349 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 151 flow [2024-11-27 20:21:08,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-27 20:21:08,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:08,350 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:08,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:21:08,350 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:08,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1648239279, now seen corresponding path program 1 times [2024-11-27 20:21:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145130154] [2024-11-27 20:21:08,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:08,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:08,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:08,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145130154] [2024-11-27 20:21:08,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145130154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:08,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:08,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:21:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988385294] [2024-11-27 20:21:08,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:08,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:21:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:08,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:21:08,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:21:08,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-27 20:21:08,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:21:08,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:08,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-27 20:21:08,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:09,034 INFO L124 PetriNetUnfolderBase]: 240/530 cut-off events. [2024-11-27 20:21:09,034 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-27 20:21:09,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 530 events. 240/530 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2237 event pairs, 112 based on Foata normal form. 14/499 useless extension candidates. Maximal degree in co-relation 1223. Up to 322 conditions per place. [2024-11-27 20:21:09,039 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 57 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-27 20:21:09,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 357 flow [2024-11-27 20:21:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:21:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:21:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-11-27 20:21:09,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.593939393939394 [2024-11-27 20:21:09,041 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 151 flow. Second operand 5 states and 98 transitions. [2024-11-27 20:21:09,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 357 flow [2024-11-27 20:21:09,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 347 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:21:09,045 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 171 flow [2024-11-27 20:21:09,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2024-11-27 20:21:09,046 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2024-11-27 20:21:09,046 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 171 flow [2024-11-27 20:21:09,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:21:09,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:09,046 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:09,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:21:09,046 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:09,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1315533835, now seen corresponding path program 1 times [2024-11-27 20:21:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:09,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512482004] [2024-11-27 20:21:09,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:09,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512482004] [2024-11-27 20:21:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512482004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987112918] [2024-11-27 20:21:09,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:09,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:09,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:09,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:09,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:21:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:09,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:21:09,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:09,934 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:21:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:10,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987112918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:21:10,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:21:10,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-27 20:21:10,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041010432] [2024-11-27 20:21:10,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:21:10,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:21:10,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:10,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:21:10,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:21:10,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-27 20:21:10,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 171 flow. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 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) [2024-11-27 20:21:10,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:10,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-27 20:21:10,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:11,198 INFO L124 PetriNetUnfolderBase]: 478/1044 cut-off events. [2024-11-27 20:21:11,198 INFO L125 PetriNetUnfolderBase]: For 404/404 co-relation queries the response was YES. [2024-11-27 20:21:11,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 1044 events. 478/1044 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4409 event pairs, 64 based on Foata normal form. 98/1094 useless extension candidates. Maximal degree in co-relation 2484. Up to 210 conditions per place. [2024-11-27 20:21:11,207 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 136 selfloop transitions, 12 changer transitions 0/152 dead transitions. [2024-11-27 20:21:11,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 152 transitions, 825 flow [2024-11-27 20:21:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:21:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:21:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-11-27 20:21:11,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2024-11-27 20:21:11,210 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 171 flow. Second operand 12 states and 248 transitions. [2024-11-27 20:21:11,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 152 transitions, 825 flow [2024-11-27 20:21:11,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 152 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:21:11,215 INFO L231 Difference]: Finished difference. Result has 74 places, 47 transitions, 246 flow [2024-11-27 20:21:11,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=246, PETRI_PLACES=74, PETRI_TRANSITIONS=47} [2024-11-27 20:21:11,216 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2024-11-27 20:21:11,216 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 47 transitions, 246 flow [2024-11-27 20:21:11,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 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) [2024-11-27 20:21:11,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:11,217 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:11,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:11,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:11,421 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:11,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1869148358, now seen corresponding path program 1 times [2024-11-27 20:21:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877261810] [2024-11-27 20:21:11,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:11,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877261810] [2024-11-27 20:21:11,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877261810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714709732] [2024-11-27 20:21:11,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:11,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:11,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:11,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:11,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:21:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:11,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:21:11,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:12,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:21:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:12,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714709732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:21:12,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:21:12,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-27 20:21:12,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275575434] [2024-11-27 20:21:12,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:21:12,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:21:12,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:12,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:21:12,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:21:12,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-27 20:21:12,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 47 transitions, 246 flow. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 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) [2024-11-27 20:21:12,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:12,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-27 20:21:12,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:13,725 INFO L124 PetriNetUnfolderBase]: 1091/2372 cut-off events. [2024-11-27 20:21:13,725 INFO L125 PetriNetUnfolderBase]: For 2647/2647 co-relation queries the response was YES. [2024-11-27 20:21:13,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6414 conditions, 2372 events. 1091/2372 cut-off events. For 2647/2647 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 12584 event pairs, 160 based on Foata normal form. 231/2570 useless extension candidates. Maximal degree in co-relation 6384. Up to 410 conditions per place. [2024-11-27 20:21:13,749 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 215 selfloop transitions, 12 changer transitions 0/230 dead transitions. [2024-11-27 20:21:13,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 230 transitions, 1742 flow [2024-11-27 20:21:13,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:21:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:21:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 257 transitions. [2024-11-27 20:21:13,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2024-11-27 20:21:13,752 INFO L175 Difference]: Start difference. First operand has 74 places, 47 transitions, 246 flow. Second operand 12 states and 257 transitions. [2024-11-27 20:21:13,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 230 transitions, 1742 flow [2024-11-27 20:21:13,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 230 transitions, 1561 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-11-27 20:21:13,764 INFO L231 Difference]: Finished difference. Result has 88 places, 53 transitions, 306 flow [2024-11-27 20:21:13,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=88, PETRI_TRANSITIONS=53} [2024-11-27 20:21:13,765 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2024-11-27 20:21:13,765 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 53 transitions, 306 flow [2024-11-27 20:21:13,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 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) [2024-11-27 20:21:13,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:13,766 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-27 20:21:13,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:21:13,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:13,969 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:13,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1520166075, now seen corresponding path program 2 times [2024-11-27 20:21:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:13,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907371893] [2024-11-27 20:21:13,970 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:21:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:14,019 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:21:14,019 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:21:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 21 proven. 37 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:14,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:14,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907371893] [2024-11-27 20:21:14,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907371893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:14,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852201699] [2024-11-27 20:21:14,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:21:14,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:14,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:14,664 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:14,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:21:14,827 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:21:14,827 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:21:14,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 20:21:14,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:15,395 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:21:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:15,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852201699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:21:15,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:21:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-27 20:21:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791939876] [2024-11-27 20:21:15,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:21:15,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:21:15,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:15,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:21:15,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:21:16,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-27 20:21:16,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 53 transitions, 306 flow. Second operand has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 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) [2024-11-27 20:21:16,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:16,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-27 20:21:16,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:19,137 INFO L124 PetriNetUnfolderBase]: 2081/4508 cut-off events. [2024-11-27 20:21:19,137 INFO L125 PetriNetUnfolderBase]: For 7927/7927 co-relation queries the response was YES. [2024-11-27 20:21:19,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13073 conditions, 4508 events. 2081/4508 cut-off events. For 7927/7927 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 24632 event pairs, 0 based on Foata normal form. 396/4904 useless extension candidates. Maximal degree in co-relation 13035. Up to 463 conditions per place. [2024-11-27 20:21:19,185 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 406 selfloop transitions, 23 changer transitions 44/476 dead transitions. [2024-11-27 20:21:19,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 476 transitions, 3336 flow [2024-11-27 20:21:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:21:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-27 20:21:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 517 transitions. [2024-11-27 20:21:19,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-27 20:21:19,188 INFO L175 Difference]: Start difference. First operand has 88 places, 53 transitions, 306 flow. Second operand 24 states and 517 transitions. [2024-11-27 20:21:19,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 476 transitions, 3336 flow [2024-11-27 20:21:19,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 476 transitions, 3299 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-11-27 20:21:19,214 INFO L231 Difference]: Finished difference. Result has 109 places, 61 transitions, 388 flow [2024-11-27 20:21:19,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=388, PETRI_PLACES=109, PETRI_TRANSITIONS=61} [2024-11-27 20:21:19,215 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 76 predicate places. [2024-11-27 20:21:19,215 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 61 transitions, 388 flow [2024-11-27 20:21:19,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 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) [2024-11-27 20:21:19,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:19,216 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-27 20:21:19,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:19,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:21:19,417 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-27 20:21:19,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash -288441263, now seen corresponding path program 2 times [2024-11-27 20:21:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:19,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108249482] [2024-11-27 20:21:19,418 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:21:19,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:19,454 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:21:19,454 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:21:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:20,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:20,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108249482] [2024-11-27 20:21:20,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108249482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:20,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786220289] [2024-11-27 20:21:20,006 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:21:20,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:20,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:20,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:21:20,207 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:21:20,207 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:21:20,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:21:20,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 46 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:20,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:21:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:21:21,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786220289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:21:21,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:21:21,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-27 20:21:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949682814] [2024-11-27 20:21:21,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:21:21,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:21:21,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:21,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:21:21,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:21:22,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-27 20:21:22,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 61 transitions, 388 flow. Second operand has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 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) [2024-11-27 20:21:22,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:22,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-27 20:21:22,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:24,183 INFO L124 PetriNetUnfolderBase]: 2333/5064 cut-off events. [2024-11-27 20:21:24,183 INFO L125 PetriNetUnfolderBase]: For 9929/9929 co-relation queries the response was YES. [2024-11-27 20:21:24,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15075 conditions, 5064 events. 2333/5064 cut-off events. For 9929/9929 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 29408 event pairs, 0 based on Foata normal form. 126/5190 useless extension candidates. Maximal degree in co-relation 15034. Up to 630 conditions per place. [2024-11-27 20:21:24,234 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 0 selfloop transitions, 0 changer transitions 417/417 dead transitions. [2024-11-27 20:21:24,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 417 transitions, 3798 flow [2024-11-27 20:21:24,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:21:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-27 20:21:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 297 transitions. [2024-11-27 20:21:24,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-27 20:21:24,240 INFO L175 Difference]: Start difference. First operand has 109 places, 61 transitions, 388 flow. Second operand 15 states and 297 transitions. [2024-11-27 20:21:24,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 417 transitions, 3798 flow [2024-11-27 20:21:24,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 417 transitions, 3217 flow, removed 171 selfloop flow, removed 18 redundant places. [2024-11-27 20:21:24,270 INFO L231 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2024-11-27 20:21:24,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2024-11-27 20:21:24,271 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 69 predicate places. [2024-11-27 20:21:24,271 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2024-11-27 20:21:24,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 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) [2024-11-27 20:21:24,275 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (13 of 14 remaining) [2024-11-27 20:21:24,275 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-27 20:21:24,275 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-27 20:21:24,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-27 20:21:24,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-11-27 20:21:24,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-11-27 20:21:24,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-27 20:21:24,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-11-27 20:21:24,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-27 20:21:24,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-27 20:21:24,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-27 20:21:24,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-27 20:21:24,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-27 20:21:24,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-27 20:21:24,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:24,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:21:24,478 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1] [2024-11-27 20:21:24,486 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 20:21:24,486 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:21:24,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:21:24 BasicIcfg [2024-11-27 20:21:24,498 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:21:24,499 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:21:24,499 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:21:24,499 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:21:24,500 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:03" (3/4) ... [2024-11-27 20:21:24,502 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:21:24,506 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-27 20:21:24,515 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-11-27 20:21:24,515 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-27 20:21:24,515 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 20:21:24,515 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-27 20:21:24,620 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:21:24,620 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:21:24,620 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:21:24,622 INFO L158 Benchmark]: Toolchain (without parser) took 23144.72ms. Allocated memory was 117.4MB in the beginning and 327.2MB in the end (delta: 209.7MB). Free memory was 91.6MB in the beginning and 129.1MB in the end (delta: -37.4MB). Peak memory consumption was 169.0MB. Max. memory is 16.1GB. [2024-11-27 20:21:24,623 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:24,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 777.86ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 62.2MB in the end (delta: 29.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-27 20:21:24,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.30ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 59.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:24,624 INFO L158 Benchmark]: Boogie Preprocessor took 58.70ms. Allocated memory is still 117.4MB. Free memory was 59.8MB in the beginning and 57.6MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:24,626 INFO L158 Benchmark]: RCFGBuilder took 1107.44ms. Allocated memory is still 117.4MB. Free memory was 57.4MB in the beginning and 36.0MB in the end (delta: 21.4MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2024-11-27 20:21:24,626 INFO L158 Benchmark]: TraceAbstraction took 20995.98ms. Allocated memory was 117.4MB in the beginning and 327.2MB in the end (delta: 209.7MB). Free memory was 35.5MB in the beginning and 134.5MB in the end (delta: -99.1MB). Peak memory consumption was 196.9MB. Max. memory is 16.1GB. [2024-11-27 20:21:24,626 INFO L158 Benchmark]: Witness Printer took 121.66ms. Allocated memory is still 327.2MB. Free memory was 134.5MB in the beginning and 129.1MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:24,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 777.86ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 62.2MB in the end (delta: 29.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.30ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 59.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.70ms. Allocated memory is still 117.4MB. Free memory was 59.8MB in the beginning and 57.6MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1107.44ms. Allocated memory is still 117.4MB. Free memory was 57.4MB in the beginning and 36.0MB in the end (delta: 21.4MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20995.98ms. Allocated memory was 117.4MB in the beginning and 327.2MB in the end (delta: 209.7MB). Free memory was 35.5MB in the beginning and 134.5MB in the end (delta: -99.1MB). Peak memory consumption was 196.9MB. Max. memory is 16.1GB. * Witness Printer took 121.66ms. Allocated memory is still 327.2MB. Free memory was 134.5MB in the beginning and 129.1MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 932]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 45 locations, 14 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: 20.8s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2245 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2153 mSDsluCounter, 437 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 418 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4567 IncrementalHoareTripleChecker+Invalid, 4608 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 19 mSDtfsCounter, 4567 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 416 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=388occurred in iteration=11, InterpolantAutomatonStates: 105, 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, 0.7s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 412 NumberOfCodeBlocks, 398 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 6925 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1947 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 945/1242 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 - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 20:21:24,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56d8e98-fd6a-475a-8422-29439f6fde9b/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: TRUE