./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/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_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX --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 0.2.5-dev-a016563 [2024-11-08 17:10:11,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:10:11,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:10:11,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:10:11,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:10:11,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:10:11,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:10:11,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:10:11,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:10:11,769 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:10:11,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:10:11,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:10:11,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:10:11,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:10:11,775 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:10:11,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:10:11,776 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:10:11,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:10:11,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:10:11,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:10:11,777 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:10:11,781 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:10:11,781 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:10:11,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:10:11,782 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:10:11,782 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:10:11,782 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:10:11,783 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:10:11,783 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:10:11,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:10:11,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:10:11,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:10:11,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:10:11,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:10:11,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:10:11,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:10:11,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:10:11,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:10:11,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:10:11,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:10:11,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:10:11,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:10:11,790 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2024-11-08 17:10:12,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:10:12,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:10:12,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:10:12,127 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:10:12,128 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:10:12,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i Unable to find full path for "g++" [2024-11-08 17:10:14,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:10:14,616 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:10:14,617 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-11-08 17:10:14,635 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/data/bb4225d58/78a084c6f7234c8e95024b7c25368c51/FLAG768ce142c [2024-11-08 17:10:14,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/data/bb4225d58/78a084c6f7234c8e95024b7c25368c51 [2024-11-08 17:10:14,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:10:14,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:10:14,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:10:14,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:10:14,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:10:14,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:10:14" (1/1) ... [2024-11-08 17:10:14,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7ff23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:14, skipping insertion in model container [2024-11-08 17:10:14,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:10:14" (1/1) ... [2024-11-08 17:10:14,737 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:10:15,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:10:15,281 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:10:15,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:10:15,408 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:10:15,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15 WrapperNode [2024-11-08 17:10:15,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:10:15,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:10:15,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:10:15,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:10:15,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,472 INFO L138 Inliner]: procedures = 263, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2024-11-08 17:10:15,472 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:10:15,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:10:15,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:10:15,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:10:15,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,514 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]. [2024-11-08 17:10:15,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,523 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:10:15,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:10:15,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:10:15,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:10:15,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (1/1) ... [2024-11-08 17:10:15,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:10:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:15,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:10:15,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:10:15,629 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 17:10:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:10:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:10:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 17:10:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:10:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 17:10:15,632 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 17:10:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:10:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:10:15,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:10:15,634 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:10:15,842 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:10:15,845 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:10:16,258 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:10:16,258 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:10:16,665 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:10:16,665 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:10:16,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:10:16 BoogieIcfgContainer [2024-11-08 17:10:16,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:10:16,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:10:16,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:10:16,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:10:16,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:10:14" (1/3) ... [2024-11-08 17:10:16,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564ea1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:10:16, skipping insertion in model container [2024-11-08 17:10:16,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:10:15" (2/3) ... [2024-11-08 17:10:16,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564ea1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:10:16, skipping insertion in model container [2024-11-08 17:10:16,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:10:16" (3/3) ... [2024-11-08 17:10:16,680 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2024-11-08 17:10:16,700 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:10:16,700 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-08 17:10:16,701 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:10:16,755 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:10:16,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 42 transitions, 88 flow [2024-11-08 17:10:16,907 INFO L124 PetriNetUnfolderBase]: 6/41 cut-off events. [2024-11-08 17:10:16,907 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:10:16,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 41 events. 6/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 87 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-08 17:10:16,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 42 transitions, 88 flow [2024-11-08 17:10:16,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 41 transitions, 85 flow [2024-11-08 17:10:16,931 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:10:16,939 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;@5d3a356e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:10:16,940 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-08 17:10:16,950 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:10:16,950 INFO L124 PetriNetUnfolderBase]: 4/19 cut-off events. [2024-11-08 17:10:16,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:10:16,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:16,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:16,955 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)] === [2024-11-08 17:10:16,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:16,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1944697317, now seen corresponding path program 1 times [2024-11-08 17:10:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:16,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746193507] [2024-11-08 17:10:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:17,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:17,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746193507] [2024-11-08 17:10:17,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746193507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:10:17,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:10:17,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:10:17,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039854758] [2024-11-08 17:10:17,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:10:17,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:10:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:17,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:10:17,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:10:17,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-08 17:10:17,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:10:17,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:17,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-08 17:10:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:17,520 INFO L124 PetriNetUnfolderBase]: 72/210 cut-off events. [2024-11-08 17:10:17,520 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:10:17,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 210 events. 72/210 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 977 event pairs, 49 based on Foata normal form. 1/181 useless extension candidates. Maximal degree in co-relation 329. Up to 135 conditions per place. [2024-11-08 17:10:17,525 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 21 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-08 17:10:17,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 133 flow [2024-11-08 17:10:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:10:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:10:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-08 17:10:17,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-11-08 17:10:17,540 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 85 flow. Second operand 3 states and 85 transitions. [2024-11-08 17:10:17,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 133 flow [2024-11-08 17:10:17,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:10:17,547 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 98 flow [2024-11-08 17:10:17,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-08 17:10:17,554 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-11-08 17:10:17,554 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 98 flow [2024-11-08 17:10:17,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:10:17,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:17,555 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:17,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:10:17,556 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)] === [2024-11-08 17:10:17,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:17,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1455338185, now seen corresponding path program 1 times [2024-11-08 17:10:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:17,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533870684] [2024-11-08 17:10:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:17,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:17,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533870684] [2024-11-08 17:10:17,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533870684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:17,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21000062] [2024-11-08 17:10:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:17,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:17,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:17,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:10:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:17,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:10:17,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:10:17,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:10:17,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21000062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:10:17,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:10:17,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2024-11-08 17:10:17,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111705439] [2024-11-08 17:10:17,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:10:17,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:10:17,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:17,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:10:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:10:17,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-11-08 17:10:17,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-08 17:10:17,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:17,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-11-08 17:10:17,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:17,972 INFO L124 PetriNetUnfolderBase]: 72/206 cut-off events. [2024-11-08 17:10:17,972 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:10:17,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 206 events. 72/206 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 932 event pairs, 49 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 339. Up to 133 conditions per place. [2024-11-08 17:10:17,976 INFO L140 encePairwiseOnDemand]: 40/42 looper letters, 20 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2024-11-08 17:10:17,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 138 flow [2024-11-08 17:10:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:10:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:10:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-08 17:10:17,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-08 17:10:17,980 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 98 flow. Second operand 3 states and 84 transitions. [2024-11-08 17:10:17,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 138 flow [2024-11-08 17:10:17,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:10:17,984 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 96 flow [2024-11-08 17:10:17,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2024-11-08 17:10:17,985 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-11-08 17:10:17,986 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 96 flow [2024-11-08 17:10:17,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-08 17:10:17,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:17,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:18,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:10:18,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:18,188 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)] === [2024-11-08 17:10:18,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:18,189 INFO L85 PathProgramCache]: Analyzing trace with hash -974531061, now seen corresponding path program 1 times [2024-11-08 17:10:18,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:18,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202487088] [2024-11-08 17:10:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202487088] [2024-11-08 17:10:18,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202487088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914785194] [2024-11-08 17:10:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:18,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:18,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:18,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:18,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:10:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:18,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:10:18,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:18,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914785194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:18,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:18,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-08 17:10:18,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852646599] [2024-11-08 17:10:18,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:18,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:10:18,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:18,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:10:18,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:10:18,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 42 [2024-11-08 17:10:18,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 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) [2024-11-08 17:10:18,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:18,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 42 [2024-11-08 17:10:18,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:18,722 INFO L124 PetriNetUnfolderBase]: 71/210 cut-off events. [2024-11-08 17:10:18,722 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:10:18,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 210 events. 71/210 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 933 event pairs, 49 based on Foata normal form. 3/184 useless extension candidates. Maximal degree in co-relation 356. Up to 133 conditions per place. [2024-11-08 17:10:18,726 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 23 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2024-11-08 17:10:18,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 166 flow [2024-11-08 17:10:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:10:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:10:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-11-08 17:10:18,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5912698412698413 [2024-11-08 17:10:18,731 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 96 flow. Second operand 6 states and 149 transitions. [2024-11-08 17:10:18,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 166 flow [2024-11-08 17:10:18,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:10:18,735 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 131 flow [2024-11-08 17:10:18,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-08 17:10:18,736 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2024-11-08 17:10:18,738 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 131 flow [2024-11-08 17:10:18,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 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) [2024-11-08 17:10:18,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:18,739 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:18,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:10:18,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:18,943 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)] === [2024-11-08 17:10:18,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1817751625, now seen corresponding path program 2 times [2024-11-08 17:10:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:18,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715133424] [2024-11-08 17:10:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:18,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:10:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:19,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715133424] [2024-11-08 17:10:19,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715133424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:10:19,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:10:19,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:10:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936515808] [2024-11-08 17:10:19,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:10:19,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:10:19,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:10:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:10:19,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-08 17:10:19,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-08 17:10:19,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:19,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-08 17:10:19,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:19,337 INFO L124 PetriNetUnfolderBase]: 70/195 cut-off events. [2024-11-08 17:10:19,337 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-08 17:10:19,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 195 events. 70/195 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 792 event pairs, 14 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 351. Up to 80 conditions per place. [2024-11-08 17:10:19,342 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 28 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2024-11-08 17:10:19,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 205 flow [2024-11-08 17:10:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:10:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:10:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-08 17:10:19,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-08 17:10:19,345 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 131 flow. Second operand 4 states and 110 transitions. [2024-11-08 17:10:19,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 205 flow [2024-11-08 17:10:19,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 197 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-08 17:10:19,349 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 125 flow [2024-11-08 17:10:19,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-11-08 17:10:19,351 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2024-11-08 17:10:19,352 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 125 flow [2024-11-08 17:10:19,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-08 17:10:19,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:19,352 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:19,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:10:19,353 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)] === [2024-11-08 17:10:19,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1817751624, now seen corresponding path program 1 times [2024-11-08 17:10:19,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:19,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088017702] [2024-11-08 17:10:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:19,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:19,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088017702] [2024-11-08 17:10:19,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088017702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:19,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326538834] [2024-11-08 17:10:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:19,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:19,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:19,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:19,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:10:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:19,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:10:19,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:19,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:19,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326538834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:19,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:19,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-08 17:10:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325167721] [2024-11-08 17:10:19,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:19,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:10:19,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:10:19,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:10:19,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 42 [2024-11-08 17:10:19,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 125 flow. Second operand has 13 states, 13 states have (on average 21.153846153846153) internal successors, (275), 13 states have internal predecessors, (275), 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) [2024-11-08 17:10:19,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:19,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 42 [2024-11-08 17:10:19,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:19,914 INFO L124 PetriNetUnfolderBase]: 71/214 cut-off events. [2024-11-08 17:10:19,915 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-08 17:10:19,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 214 events. 71/214 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 854 event pairs, 49 based on Foata normal form. 6/199 useless extension candidates. Maximal degree in co-relation 425. Up to 133 conditions per place. [2024-11-08 17:10:19,917 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 29 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-11-08 17:10:19,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 291 flow [2024-11-08 17:10:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:10:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:10:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 275 transitions. [2024-11-08 17:10:19,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5456349206349206 [2024-11-08 17:10:19,920 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 125 flow. Second operand 12 states and 275 transitions. [2024-11-08 17:10:19,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 291 flow [2024-11-08 17:10:19,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:10:19,924 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 215 flow [2024-11-08 17:10:19,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=215, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-11-08 17:10:19,925 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-11-08 17:10:19,926 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 215 flow [2024-11-08 17:10:19,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.153846153846153) internal successors, (275), 13 states have internal predecessors, (275), 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) [2024-11-08 17:10:19,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:19,927 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:19,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:10:20,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:20,128 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)] === [2024-11-08 17:10:20,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash 78524432, now seen corresponding path program 2 times [2024-11-08 17:10:20,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:20,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061025364] [2024-11-08 17:10:20,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:20,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:20,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:20,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061025364] [2024-11-08 17:10:20,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061025364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:10:20,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:10:20,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:10:20,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307587668] [2024-11-08 17:10:20,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:10:20,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:10:20,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:20,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:10:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:10:20,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-08 17:10:20,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-11-08 17:10:20,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:20,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-08 17:10:20,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:20,687 INFO L124 PetriNetUnfolderBase]: 149/357 cut-off events. [2024-11-08 17:10:20,688 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-08 17:10:20,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 357 events. 149/357 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1454 event pairs, 70 based on Foata normal form. 8/329 useless extension candidates. Maximal degree in co-relation 722. Up to 197 conditions per place. [2024-11-08 17:10:20,691 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 51 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-11-08 17:10:20,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 369 flow [2024-11-08 17:10:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:10:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:10:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-08 17:10:20,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-08 17:10:20,694 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 215 flow. Second operand 5 states and 140 transitions. [2024-11-08 17:10:20,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 369 flow [2024-11-08 17:10:20,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 363 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:10:20,703 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 237 flow [2024-11-08 17:10:20,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2024-11-08 17:10:20,704 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-08 17:10:20,705 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 237 flow [2024-11-08 17:10:20,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-11-08 17:10:20,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:20,706 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:20,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:10:20,707 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)] === [2024-11-08 17:10:20,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:20,709 INFO L85 PathProgramCache]: Analyzing trace with hash -525034456, now seen corresponding path program 1 times [2024-11-08 17:10:20,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:20,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329052236] [2024-11-08 17:10:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:20,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:20,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329052236] [2024-11-08 17:10:20,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329052236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:10:20,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:10:20,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:10:20,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146148845] [2024-11-08 17:10:20,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:10:20,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:10:20,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:10:20,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:10:20,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-08 17:10:20,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-08 17:10:20,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:20,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-08 17:10:20,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:21,062 INFO L124 PetriNetUnfolderBase]: 120/325 cut-off events. [2024-11-08 17:10:21,062 INFO L125 PetriNetUnfolderBase]: For 123/128 co-relation queries the response was YES. [2024-11-08 17:10:21,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 325 events. 120/325 cut-off events. For 123/128 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1332 event pairs, 26 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 700. Up to 140 conditions per place. [2024-11-08 17:10:21,066 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 38 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-11-08 17:10:21,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 349 flow [2024-11-08 17:10:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:10:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:10:21,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-08 17:10:21,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-08 17:10:21,068 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 237 flow. Second operand 4 states and 110 transitions. [2024-11-08 17:10:21,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 349 flow [2024-11-08 17:10:21,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 343 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:10:21,074 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 235 flow [2024-11-08 17:10:21,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2024-11-08 17:10:21,076 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2024-11-08 17:10:21,076 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 235 flow [2024-11-08 17:10:21,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-08 17:10:21,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:21,078 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:21,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:10:21,078 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)] === [2024-11-08 17:10:21,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash -525034455, now seen corresponding path program 1 times [2024-11-08 17:10:21,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:21,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126707606] [2024-11-08 17:10:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:21,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:21,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:21,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126707606] [2024-11-08 17:10:21,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126707606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:10:21,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:10:21,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:10:21,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077828792] [2024-11-08 17:10:21,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:10:21,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:10:21,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:21,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:10:21,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:10:21,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-08 17:10:21,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-11-08 17:10:21,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:21,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-08 17:10:21,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:21,667 INFO L124 PetriNetUnfolderBase]: 258/591 cut-off events. [2024-11-08 17:10:21,668 INFO L125 PetriNetUnfolderBase]: For 197/210 co-relation queries the response was YES. [2024-11-08 17:10:21,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 591 events. 258/591 cut-off events. For 197/210 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2595 event pairs, 109 based on Foata normal form. 28/591 useless extension candidates. Maximal degree in co-relation 1338. Up to 335 conditions per place. [2024-11-08 17:10:21,673 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 57 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-08 17:10:21,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 437 flow [2024-11-08 17:10:21,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:10:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:10:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-08 17:10:21,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-08 17:10:21,675 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 235 flow. Second operand 5 states and 140 transitions. [2024-11-08 17:10:21,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 437 flow [2024-11-08 17:10:21,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 427 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:10:21,680 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 257 flow [2024-11-08 17:10:21,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2024-11-08 17:10:21,682 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2024-11-08 17:10:21,683 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 257 flow [2024-11-08 17:10:21,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-11-08 17:10:21,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:21,684 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:21,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:10:21,684 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-08 17:10:21,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:21,688 INFO L85 PathProgramCache]: Analyzing trace with hash -115065976, now seen corresponding path program 1 times [2024-11-08 17:10:21,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:21,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693248681] [2024-11-08 17:10:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:21,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:22,085 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:22,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:22,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693248681] [2024-11-08 17:10:22,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693248681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:22,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002955675] [2024-11-08 17:10:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:22,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:22,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:22,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:22,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:10:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:22,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 17:10:22,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:22,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:22,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002955675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:22,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:22,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-08 17:10:22,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559347634] [2024-11-08 17:10:22,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:22,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:10:22,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:10:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:10:23,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-08 17:10:23,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 257 flow. Second operand has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:10:23,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:23,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-08 17:10:23,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:23,815 INFO L124 PetriNetUnfolderBase]: 495/1145 cut-off events. [2024-11-08 17:10:23,815 INFO L125 PetriNetUnfolderBase]: For 535/565 co-relation queries the response was YES. [2024-11-08 17:10:23,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 1145 events. 495/1145 cut-off events. For 535/565 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5387 event pairs, 78 based on Foata normal form. 140/1269 useless extension candidates. Maximal degree in co-relation 2654. Up to 223 conditions per place. [2024-11-08 17:10:23,825 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 136 selfloop transitions, 12 changer transitions 0/161 dead transitions. [2024-11-08 17:10:23,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 161 transitions, 911 flow [2024-11-08 17:10:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:10:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:10:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 348 transitions. [2024-11-08 17:10:23,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-11-08 17:10:23,827 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 257 flow. Second operand 12 states and 348 transitions. [2024-11-08 17:10:23,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 161 transitions, 911 flow [2024-11-08 17:10:23,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 161 transitions, 889 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:10:23,833 INFO L231 Difference]: Finished difference. Result has 84 places, 56 transitions, 338 flow [2024-11-08 17:10:23,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=338, PETRI_PLACES=84, PETRI_TRANSITIONS=56} [2024-11-08 17:10:23,834 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2024-11-08 17:10:23,834 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 56 transitions, 338 flow [2024-11-08 17:10:23,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:10:23,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:23,835 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:23,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:10:24,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:24,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-08 17:10:24,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1785384961, now seen corresponding path program 1 times [2024-11-08 17:10:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:24,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717079241] [2024-11-08 17:10:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:24,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717079241] [2024-11-08 17:10:24,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717079241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:24,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114575865] [2024-11-08 17:10:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:24,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:24,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:24,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:24,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:10:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:24,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 17:10:24,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:24,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:25,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114575865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:25,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:25,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-08 17:10:25,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974044877] [2024-11-08 17:10:25,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:25,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:10:25,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:25,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:10:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:10:25,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-08 17:10:25,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 56 transitions, 338 flow. Second operand has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:10:25,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:25,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-08 17:10:25,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:26,249 INFO L124 PetriNetUnfolderBase]: 1126/2576 cut-off events. [2024-11-08 17:10:26,249 INFO L125 PetriNetUnfolderBase]: For 2692/2721 co-relation queries the response was YES. [2024-11-08 17:10:26,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 2576 events. 1126/2576 cut-off events. For 2692/2721 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 14385 event pairs, 151 based on Foata normal form. 320/2862 useless extension candidates. Maximal degree in co-relation 6619. Up to 493 conditions per place. [2024-11-08 17:10:26,340 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 206 selfloop transitions, 12 changer transitions 0/230 dead transitions. [2024-11-08 17:10:26,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 230 transitions, 1726 flow [2024-11-08 17:10:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:10:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:10:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 348 transitions. [2024-11-08 17:10:26,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-11-08 17:10:26,343 INFO L175 Difference]: Start difference. First operand has 84 places, 56 transitions, 338 flow. Second operand 12 states and 348 transitions. [2024-11-08 17:10:26,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 230 transitions, 1726 flow [2024-11-08 17:10:26,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 230 transitions, 1545 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-11-08 17:10:26,353 INFO L231 Difference]: Finished difference. Result has 98 places, 62 transitions, 404 flow [2024-11-08 17:10:26,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=404, PETRI_PLACES=98, PETRI_TRANSITIONS=62} [2024-11-08 17:10:26,354 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2024-11-08 17:10:26,354 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 62 transitions, 404 flow [2024-11-08 17:10:26,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:10:26,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:26,355 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:26,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:10:26,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:10:26,555 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-08 17:10:26,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash -432429183, now seen corresponding path program 2 times [2024-11-08 17:10:26,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:26,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777458604] [2024-11-08 17:10:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:27,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:27,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777458604] [2024-11-08 17:10:27,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777458604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260817743] [2024-11-08 17:10:27,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:10:27,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:27,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:27,016 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:27,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:10:27,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:10:27,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:10:27,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 17:10:27,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 56 proven. 12 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:28,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 48 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:28,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260817743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:28,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:28,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2024-11-08 17:10:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422012020] [2024-11-08 17:10:28,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:28,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:10:28,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:28,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:10:28,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:10:29,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 42 [2024-11-08 17:10:29,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 62 transitions, 404 flow. Second operand has 25 states, 25 states have (on average 21.44) internal successors, (536), 25 states have internal predecessors, (536), 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) [2024-11-08 17:10:29,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:29,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 42 [2024-11-08 17:10:29,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:30,911 INFO L124 PetriNetUnfolderBase]: 1478/3243 cut-off events. [2024-11-08 17:10:30,912 INFO L125 PetriNetUnfolderBase]: For 4837/4878 co-relation queries the response was YES. [2024-11-08 17:10:30,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9073 conditions, 3243 events. 1478/3243 cut-off events. For 4837/4878 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 17988 event pairs, 31 based on Foata normal form. 192/3435 useless extension candidates. Maximal degree in co-relation 9032. Up to 320 conditions per place. [2024-11-08 17:10:30,945 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 267 selfloop transitions, 16 changer transitions 14/308 dead transitions. [2024-11-08 17:10:30,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 308 transitions, 2116 flow [2024-11-08 17:10:30,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 17:10:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-08 17:10:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 440 transitions. [2024-11-08 17:10:30,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-08 17:10:30,948 INFO L175 Difference]: Start difference. First operand has 98 places, 62 transitions, 404 flow. Second operand 16 states and 440 transitions. [2024-11-08 17:10:30,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 308 transitions, 2116 flow [2024-11-08 17:10:30,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 308 transitions, 2087 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-08 17:10:30,975 INFO L231 Difference]: Finished difference. Result has 108 places, 62 transitions, 414 flow [2024-11-08 17:10:30,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=414, PETRI_PLACES=108, PETRI_TRANSITIONS=62} [2024-11-08 17:10:30,976 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2024-11-08 17:10:30,976 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 62 transitions, 414 flow [2024-11-08 17:10:30,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 21.44) internal successors, (536), 25 states have internal predecessors, (536), 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) [2024-11-08 17:10:30,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:30,977 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:30,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:10:31,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:10:31,178 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-08 17:10:31,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1769770480, now seen corresponding path program 2 times [2024-11-08 17:10:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:31,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16539868] [2024-11-08 17:10:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:31,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:31,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:31,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16539868] [2024-11-08 17:10:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16539868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:31,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132748989] [2024-11-08 17:10:31,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:10:31,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:31,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:31,666 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:31,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:10:31,830 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:10:31,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:10:31,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 17:10:31,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:32,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132748989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:32,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:32,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-08 17:10:32,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863348682] [2024-11-08 17:10:32,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:32,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 17:10:32,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:32,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 17:10:32,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-08 17:10:33,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-08 17:10:33,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 62 transitions, 414 flow. Second operand has 23 states, 23 states have (on average 22.17391304347826) internal successors, (510), 23 states have internal predecessors, (510), 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) [2024-11-08 17:10:33,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:33,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-08 17:10:33,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:36,289 INFO L124 PetriNetUnfolderBase]: 2667/6219 cut-off events. [2024-11-08 17:10:36,289 INFO L125 PetriNetUnfolderBase]: For 15399/15399 co-relation queries the response was YES. [2024-11-08 17:10:36,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17544 conditions, 6219 events. 2667/6219 cut-off events. For 15399/15399 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 38546 event pairs, 149 based on Foata normal form. 702/6919 useless extension candidates. Maximal degree in co-relation 17503. Up to 586 conditions per place. [2024-11-08 17:10:36,361 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 477 selfloop transitions, 24 changer transitions 0/512 dead transitions. [2024-11-08 17:10:36,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 512 transitions, 4083 flow [2024-11-08 17:10:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 17:10:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 17:10:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 700 transitions. [2024-11-08 17:10:36,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-11-08 17:10:36,365 INFO L175 Difference]: Start difference. First operand has 108 places, 62 transitions, 414 flow. Second operand 24 states and 700 transitions. [2024-11-08 17:10:36,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 512 transitions, 4083 flow [2024-11-08 17:10:36,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 512 transitions, 3509 flow, removed 88 selfloop flow, removed 10 redundant places. [2024-11-08 17:10:36,408 INFO L231 Difference]: Finished difference. Result has 133 places, 75 transitions, 574 flow [2024-11-08 17:10:36,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=574, PETRI_PLACES=133, PETRI_TRANSITIONS=75} [2024-11-08 17:10:36,409 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 94 predicate places. [2024-11-08 17:10:36,409 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 75 transitions, 574 flow [2024-11-08 17:10:36,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 22.17391304347826) internal successors, (510), 23 states have internal predecessors, (510), 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) [2024-11-08 17:10:36,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:36,410 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:36,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 17:10:36,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:10:36,614 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-08 17:10:36,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:36,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1045361984, now seen corresponding path program 3 times [2024-11-08 17:10:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:36,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113531220] [2024-11-08 17:10:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 337 proven. 73 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 17:10:37,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113531220] [2024-11-08 17:10:37,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113531220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626547759] [2024-11-08 17:10:37,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:10:37,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:37,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:37,086 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:37,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:10:37,233 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:10:37,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:10:37,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 17:10:37,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 74 proven. 30 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2024-11-08 17:10:38,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2024-11-08 17:10:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626547759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:38,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:38,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 25 [2024-11-08 17:10:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296781524] [2024-11-08 17:10:38,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:38,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:10:38,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:38,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:10:38,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:10:39,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 42 [2024-11-08 17:10:39,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 75 transitions, 574 flow. Second operand has 25 states, 25 states have (on average 21.92) internal successors, (548), 25 states have internal predecessors, (548), 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) [2024-11-08 17:10:39,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:39,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 42 [2024-11-08 17:10:39,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:42,746 INFO L124 PetriNetUnfolderBase]: 2738/6012 cut-off events. [2024-11-08 17:10:42,747 INFO L125 PetriNetUnfolderBase]: For 10483/10483 co-relation queries the response was YES. [2024-11-08 17:10:42,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18059 conditions, 6012 events. 2738/6012 cut-off events. For 10483/10483 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 36373 event pairs, 0 based on Foata normal form. 39/6050 useless extension candidates. Maximal degree in co-relation 18005. Up to 512 conditions per place. [2024-11-08 17:10:42,824 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 0 selfloop transitions, 0 changer transitions 684/684 dead transitions. [2024-11-08 17:10:42,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 684 transitions, 4763 flow [2024-11-08 17:10:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 17:10:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-08 17:10:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 886 transitions. [2024-11-08 17:10:42,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392496392496393 [2024-11-08 17:10:42,828 INFO L175 Difference]: Start difference. First operand has 133 places, 75 transitions, 574 flow. Second operand 33 states and 886 transitions. [2024-11-08 17:10:42,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 684 transitions, 4763 flow [2024-11-08 17:10:42,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 684 transitions, 4684 flow, removed 18 selfloop flow, removed 21 redundant places. [2024-11-08 17:10:42,922 INFO L231 Difference]: Finished difference. Result has 142 places, 0 transitions, 0 flow [2024-11-08 17:10:42,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=0, PETRI_PLACES=142, PETRI_TRANSITIONS=0} [2024-11-08 17:10:42,923 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 103 predicate places. [2024-11-08 17:10:42,923 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 0 transitions, 0 flow [2024-11-08 17:10:42,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 21.92) internal successors, (548), 25 states have internal predecessors, (548), 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) [2024-11-08 17:10:42,926 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (13 of 14 remaining) [2024-11-08 17:10:42,927 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-08 17:10:42,927 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-08 17:10:42,927 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-08 17:10:42,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-11-08 17:10:42,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-11-08 17:10:42,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-08 17:10:42,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-11-08 17:10:42,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-08 17:10:42,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-08 17:10:42,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-08 17:10:42,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-08 17:10:42,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-08 17:10:42,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-08 17:10:42,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:10:43,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 17:10:43,134 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 17:10:43,139 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 17:10:43,139 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 17:10:43,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 05:10:43 BasicIcfg [2024-11-08 17:10:43,145 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 17:10:43,145 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 17:10:43,145 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 17:10:43,146 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 17:10:43,146 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:10:16" (3/4) ... [2024-11-08 17:10:43,150 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 17:10:43,154 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-08 17:10:43,162 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-11-08 17:10:43,164 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-08 17:10:43,164 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 17:10:43,165 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-08 17:10:43,265 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 17:10:43,266 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 17:10:43,267 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 17:10:43,267 INFO L158 Benchmark]: Toolchain (without parser) took 28609.36ms. Allocated memory was 151.0MB in the beginning and 559.9MB in the end (delta: 408.9MB). Free memory was 117.4MB in the beginning and 170.2MB in the end (delta: -52.8MB). Peak memory consumption was 357.0MB. Max. memory is 16.1GB. [2024-11-08 17:10:43,268 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 151.0MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:10:43,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 749.51ms. Allocated memory is still 151.0MB. Free memory was 117.0MB in the beginning and 84.7MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-11-08 17:10:43,268 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.47ms. Allocated memory is still 151.0MB. Free memory was 84.7MB in the beginning and 81.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 17:10:43,269 INFO L158 Benchmark]: Boogie Preprocessor took 55.68ms. Allocated memory is still 151.0MB. Free memory was 81.8MB in the beginning and 78.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:10:43,269 INFO L158 Benchmark]: RCFGBuilder took 1134.05ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 78.9MB in the beginning and 88.0MB in the end (delta: -9.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2024-11-08 17:10:43,269 INFO L158 Benchmark]: TraceAbstraction took 26475.47ms. Allocated memory was 182.5MB in the beginning and 559.9MB in the end (delta: 377.5MB). Free memory was 87.8MB in the beginning and 174.8MB in the end (delta: -87.0MB). Peak memory consumption was 291.0MB. Max. memory is 16.1GB. [2024-11-08 17:10:43,270 INFO L158 Benchmark]: Witness Printer took 121.64ms. Allocated memory is still 559.9MB. Free memory was 174.8MB in the beginning and 170.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 17:10:43,271 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 151.0MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 749.51ms. Allocated memory is still 151.0MB. Free memory was 117.0MB in the beginning and 84.7MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.47ms. Allocated memory is still 151.0MB. Free memory was 84.7MB in the beginning and 81.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.68ms. Allocated memory is still 151.0MB. Free memory was 81.8MB in the beginning and 78.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1134.05ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 78.9MB in the beginning and 88.0MB in the end (delta: -9.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * TraceAbstraction took 26475.47ms. Allocated memory was 182.5MB in the beginning and 559.9MB in the end (delta: 377.5MB). Free memory was 87.8MB in the beginning and 174.8MB in the end (delta: -87.0MB). Peak memory consumption was 291.0MB. Max. memory is 16.1GB. * Witness Printer took 121.64ms. Allocated memory is still 559.9MB. Free memory was 174.8MB in the beginning and 170.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. 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, 53 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: 26.3s, OverallIterations: 13, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2365 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2242 mSDsluCounter, 761 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 730 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7331 IncrementalHoareTripleChecker+Invalid, 7417 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 31 mSDtfsCounter, 7331 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 815 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=574occurred in iteration=12, InterpolantAutomatonStates: 139, 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, 9.1s InterpolantComputationTime, 816 NumberOfCodeBlocks, 726 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1128 ConstructedInterpolants, 0 QuantifiedInterpolants, 12960 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2237 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 28 InterpolantComputations, 6 PerfectInterpolantSequences, 2944/3537 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 - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-08 17:10:43,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c74f8e-7942-458b-9375-140d3467f2aa/bin/uautomizer-verify-jihMAELWvX/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