./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2089b8408f47d976db10454bec1f56d65e439056bc0b2c5e33c1e775793bdc1f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:00:41,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:00:41,320 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 22:00:41,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:00:41,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:00:41,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:00:41,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:00:41,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:00:41,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:00:41,354 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:00:41,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:00:41,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:00:41,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:00:41,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:00:41,357 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:00:41,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:00:41,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:00:41,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:00:41,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:00:41,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:00:41,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:00:41,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:00:41,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:00:41,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:00:41,362 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:00:41,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:00:41,364 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:00:41,364 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:00:41,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:00:41,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:00:41,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:00:41,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:00:41,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:00:41,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:00:41,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:00:41,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:00:41,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:00:41,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:00:41,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:00:41,370 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:00:41,370 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:00:41,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:00:41,371 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_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2089b8408f47d976db10454bec1f56d65e439056bc0b2c5e33c1e775793bdc1f [2023-11-24 22:00:41,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:00:41,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:00:41,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:00:41,660 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:00:41,661 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:00:41,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/test-easy7.wvr.c [2023-11-24 22:00:45,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:00:45,336 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:00:45,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/sv-benchmarks/c/weaver/test-easy7.wvr.c [2023-11-24 22:00:45,350 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/data/69839a3bf/62f9ae58f04a4f7d839da744761ef6af/FLAG7997b362b [2023-11-24 22:00:45,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/data/69839a3bf/62f9ae58f04a4f7d839da744761ef6af [2023-11-24 22:00:45,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:00:45,376 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:00:45,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:00:45,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:00:45,387 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:00:45,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7933dae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45, skipping insertion in model container [2023-11-24 22:00:45,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,420 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:00:45,655 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/sv-benchmarks/c/weaver/test-easy7.wvr.c[1898,1911] [2023-11-24 22:00:45,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:00:45,675 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:00:45,712 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/sv-benchmarks/c/weaver/test-easy7.wvr.c[1898,1911] [2023-11-24 22:00:45,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:00:45,740 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:00:45,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45 WrapperNode [2023-11-24 22:00:45,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:00:45,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:00:45,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:00:45,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:00:45,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,797 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2023-11-24 22:00:45,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:00:45,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:00:45,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:00:45,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:00:45,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,859 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-24 22:00:45,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:00:45,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:00:45,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:00:45,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:00:45,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (1/1) ... [2023-11-24 22:00:45,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:00:45,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:00:45,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:00:45,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:00:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:00:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 22:00:45,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 22:00:45,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 22:00:45,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 22:00:45,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:00:45,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:00:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:00:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:00:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:00:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:00:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:00:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:00:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:00:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 22:00:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 22:00:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 22:00:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:00:45,998 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:00:46,137 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:00:46,140 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:00:46,410 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:00:46,595 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:00:46,595 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:00:46,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:00:46 BoogieIcfgContainer [2023-11-24 22:00:46,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:00:46,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:00:46,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:00:46,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:00:46,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:00:45" (1/3) ... [2023-11-24 22:00:46,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c84b604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:00:46, skipping insertion in model container [2023-11-24 22:00:46,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:00:45" (2/3) ... [2023-11-24 22:00:46,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c84b604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:00:46, skipping insertion in model container [2023-11-24 22:00:46,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:00:46" (3/3) ... [2023-11-24 22:00:46,608 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2023-11-24 22:00:46,620 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:00:46,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:00:46,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 22:00:46,635 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:00:46,681 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 22:00:46,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 15 transitions, 44 flow [2023-11-24 22:00:46,752 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-24 22:00:46,753 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 22:00:46,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 13 events. 0/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-24 22:00:46,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 15 transitions, 44 flow [2023-11-24 22:00:46,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 12 transitions, 36 flow [2023-11-24 22:00:46,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:00:46,779 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1cee1cf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:00:46,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 22:00:46,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:00:46,791 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-24 22:00:46,791 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 22:00:46,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:46,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:46,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:00:46,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:46,817 INFO L85 PathProgramCache]: Analyzing trace with hash 508854388, now seen corresponding path program 1 times [2023-11-24 22:00:46,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021367176] [2023-11-24 22:00:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:46,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:00:47,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021367176] [2023-11-24 22:00:47,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021367176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:47,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:47,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:00:47,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962605143] [2023-11-24 22:00:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:47,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:00:47,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:00:47,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:00:47,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 15 [2023-11-24 22:00:47,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-24 22:00:47,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:47,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 15 [2023-11-24 22:00:47,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:48,020 INFO L124 PetriNetUnfolderBase]: 8/33 cut-off events. [2023-11-24 22:00:48,021 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-24 22:00:48,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 33 events. 8/33 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 1 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 45. Up to 13 conditions per place. [2023-11-24 22:00:48,024 INFO L140 encePairwiseOnDemand]: 11/15 looper letters, 10 selfloop transitions, 2 changer transitions 10/23 dead transitions. [2023-11-24 22:00:48,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 23 transitions, 114 flow [2023-11-24 22:00:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:00:48,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:00:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 35 transitions. [2023-11-24 22:00:48,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-11-24 22:00:48,042 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 35 transitions. [2023-11-24 22:00:48,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 35 transitions. [2023-11-24 22:00:48,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:48,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 35 transitions. [2023-11-24 22:00:48,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2023-11-24 22:00:48,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2023-11-24 22:00:48,055 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2023-11-24 22:00:48,057 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 36 flow. Second operand 4 states and 35 transitions. [2023-11-24 22:00:48,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 23 transitions, 114 flow [2023-11-24 22:00:48,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 23 transitions, 98 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 22:00:48,064 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 38 flow [2023-11-24 22:00:48,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=38, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-11-24 22:00:48,071 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 0 predicate places. [2023-11-24 22:00:48,072 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 38 flow [2023-11-24 22:00:48,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-24 22:00:48,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:48,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:48,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:00:48,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:00:48,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:48,075 INFO L85 PathProgramCache]: Analyzing trace with hash 345768094, now seen corresponding path program 2 times [2023-11-24 22:00:48,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:48,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373446225] [2023-11-24 22:00:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:48,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:00:48,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:48,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373446225] [2023-11-24 22:00:48,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373446225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:48,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:48,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:00:48,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567143363] [2023-11-24 22:00:48,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:48,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:00:48,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:00:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:00:48,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 15 [2023-11-24 22:00:48,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-24 22:00:48,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:48,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 15 [2023-11-24 22:00:48,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:48,658 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-24 22:00:48,659 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 22:00:48,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 1 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 17. Up to 11 conditions per place. [2023-11-24 22:00:48,660 INFO L140 encePairwiseOnDemand]: 11/15 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-11-24 22:00:48,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 11 transitions, 56 flow [2023-11-24 22:00:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:00:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:00:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2023-11-24 22:00:48,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-24 22:00:48,666 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 24 transitions. [2023-11-24 22:00:48,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 24 transitions. [2023-11-24 22:00:48,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:48,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 24 transitions. [2023-11-24 22:00:48,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-11-24 22:00:48,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2023-11-24 22:00:48,673 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2023-11-24 22:00:48,674 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 38 flow. Second operand 4 states and 24 transitions. [2023-11-24 22:00:48,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 11 transitions, 56 flow [2023-11-24 22:00:48,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 22:00:48,679 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-11-24 22:00:48,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-11-24 22:00:48,681 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -3 predicate places. [2023-11-24 22:00:48,681 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-11-24 22:00:48,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-24 22:00:48,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-24 22:00:48,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-24 22:00:48,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-24 22:00:48,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:00:48,695 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-11-24 22:00:48,704 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 22:00:48,704 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:00:48,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:00:48 BasicIcfg [2023-11-24 22:00:48,720 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:00:48,721 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:00:48,721 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:00:48,722 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:00:48,722 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:00:46" (3/4) ... [2023-11-24 22:00:48,725 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:00:48,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-24 22:00:48,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-24 22:00:48,740 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2023-11-24 22:00:48,740 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-24 22:00:48,740 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-24 22:00:48,741 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 22:00:48,891 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 22:00:48,891 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 22:00:48,891 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:00:48,892 INFO L158 Benchmark]: Toolchain (without parser) took 3516.37ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 113.6MB in the beginning and 140.0MB in the end (delta: -26.4MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-11-24 22:00:48,895 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:00:48,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.03ms. Allocated memory is still 144.7MB. Free memory was 113.2MB in the beginning and 102.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:00:48,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.35ms. Allocated memory is still 144.7MB. Free memory was 102.4MB in the beginning and 100.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:00:48,897 INFO L158 Benchmark]: Boogie Preprocessor took 94.02ms. Allocated memory is still 144.7MB. Free memory was 100.6MB in the beginning and 98.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:00:48,897 INFO L158 Benchmark]: RCFGBuilder took 703.63ms. Allocated memory is still 144.7MB. Free memory was 98.6MB in the beginning and 74.3MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-24 22:00:48,898 INFO L158 Benchmark]: TraceAbstraction took 2119.83ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 73.4MB in the beginning and 144.2MB in the end (delta: -70.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:00:48,898 INFO L158 Benchmark]: Witness Printer took 170.68ms. Allocated memory is still 188.7MB. Free memory was 144.2MB in the beginning and 140.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:00:48,901 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.03ms. Allocated memory is still 144.7MB. Free memory was 113.2MB in the beginning and 102.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.35ms. Allocated memory is still 144.7MB. Free memory was 102.4MB in the beginning and 100.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.02ms. Allocated memory is still 144.7MB. Free memory was 100.6MB in the beginning and 98.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 703.63ms. Allocated memory is still 144.7MB. Free memory was 98.6MB in the beginning and 74.3MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2119.83ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 73.4MB in the beginning and 144.2MB in the end (delta: -70.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 170.68ms. Allocated memory is still 188.7MB. Free memory was 144.2MB in the beginning and 140.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 22 locations, 3 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: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=1, InterpolantAutomatonStates: 8, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 22:00:48,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a997c75-a76a-4a59-93f2-aae04db62206/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE