./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test02.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_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/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_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/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_7e44fca5-8c67-439b-9032-c206dbd9ae4a/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 23f21f1d12fc9578c569fbf2e71b5421b3d1aa45a00983439dd99e97e66f1c7b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:48:12,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:48:12,424 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:48:12,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:48:12,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:48:12,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:48:12,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:48:12,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:48:12,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:48:12,473 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:48:12,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:48:12,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:48:12,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:48:12,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:48:12,476 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:48:12,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:48:12,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:48:12,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:48:12,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:48:12,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:48:12,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:48:12,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:48:12,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:48:12,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:48:12,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:48:12,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:48:12,491 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:48:12,492 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:48:12,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:48:12,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:48:12,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:48:12,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:12,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:48:12,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:48:12,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:48:12,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:48:12,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:48:12,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:48:12,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:48:12,518 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:48:12,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:48:12,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:48:12,519 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_7e44fca5-8c67-439b-9032-c206dbd9ae4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f21f1d12fc9578c569fbf2e71b5421b3d1aa45a00983439dd99e97e66f1c7b [2023-11-24 21:48:12,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:48:12,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:48:12,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:48:12,926 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:48:12,926 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:48:12,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-regression/test02.c [2023-11-24 21:48:16,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:48:16,336 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:48:16,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/sv-benchmarks/c/ldv-regression/test02.c [2023-11-24 21:48:16,346 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/data/d77ea1997/2b67d273aa924c3191f9aa55042e6d09/FLAG2e427cd11 [2023-11-24 21:48:16,363 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/data/d77ea1997/2b67d273aa924c3191f9aa55042e6d09 [2023-11-24 21:48:16,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:48:16,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:48:16,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:16,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:48:16,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:48:16,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8f05f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16, skipping insertion in model container [2023-11-24 21:48:16,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,420 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:48:16,566 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_7e44fca5-8c67-439b-9032-c206dbd9ae4a/sv-benchmarks/c/ldv-regression/test02.c[413,426] [2023-11-24 21:48:16,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:16,583 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:48:16,597 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_7e44fca5-8c67-439b-9032-c206dbd9ae4a/sv-benchmarks/c/ldv-regression/test02.c[413,426] [2023-11-24 21:48:16,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:16,613 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:48:16,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16 WrapperNode [2023-11-24 21:48:16,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:16,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:16,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:48:16,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:48:16,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,648 INFO L138 Inliner]: procedures = 12, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-11-24 21:48:16,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:16,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:48:16,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:48:16,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:48:16,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,686 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 21:48:16,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:48:16,696 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:48:16,696 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:48:16,696 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:48:16,697 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (1/1) ... [2023-11-24 21:48:16,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:16,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:48:16,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:48:16,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:48:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:48:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:48:16,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:48:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:48:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:48:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:48:16,871 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:48:16,886 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:48:17,008 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:48:17,035 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:48:17,035 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:48:17,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:17 BoogieIcfgContainer [2023-11-24 21:48:17,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:48:17,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:48:17,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:48:17,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:48:17,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:48:16" (1/3) ... [2023-11-24 21:48:17,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd6cdd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:48:17, skipping insertion in model container [2023-11-24 21:48:17,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:16" (2/3) ... [2023-11-24 21:48:17,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd6cdd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:48:17, skipping insertion in model container [2023-11-24 21:48:17,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:17" (3/3) ... [2023-11-24 21:48:17,045 INFO L112 eAbstractionObserver]: Analyzing ICFG test02.c [2023-11-24 21:48:17,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:48:17,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:48:17,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:48:17,120 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;@1f983fa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:48:17,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:48:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 21:48:17,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:48:17,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:48:17,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:48:17,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:48:17,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash 43409, now seen corresponding path program 1 times [2023-11-24 21:48:17,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:48:17,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540883435] [2023-11-24 21:48:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:17,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:48:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:48:17,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:48:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:48:17,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 21:48:17,313 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:48:17,314 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 21:48:17,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:48:17,324 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 21:48:17,332 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:48:17,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:48:17 BoogieIcfgContainer [2023-11-24 21:48:17,355 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:48:17,357 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:48:17,357 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:48:17,357 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:48:17,358 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:17" (3/4) ... [2023-11-24 21:48:17,359 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 21:48:17,417 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:48:17,417 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:48:17,423 INFO L158 Benchmark]: Toolchain (without parser) took 1046.37ms. Allocated memory is still 176.2MB. Free memory was 145.7MB in the beginning and 125.3MB in the end (delta: 20.4MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-24 21:48:17,424 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:48:17,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.27ms. Allocated memory is still 176.2MB. Free memory was 145.5MB in the beginning and 138.2MB in the end (delta: 7.3MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2023-11-24 21:48:17,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.86ms. Allocated memory is still 176.2MB. Free memory was 138.2MB in the beginning and 137.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:48:17,426 INFO L158 Benchmark]: Boogie Preprocessor took 46.61ms. Allocated memory is still 176.2MB. Free memory was 137.0MB in the beginning and 135.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:48:17,426 INFO L158 Benchmark]: RCFGBuilder took 339.97ms. Allocated memory is still 176.2MB. Free memory was 135.7MB in the beginning and 141.1MB in the end (delta: -5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 21:48:17,426 INFO L158 Benchmark]: TraceAbstraction took 316.52ms. Allocated memory is still 176.2MB. Free memory was 140.2MB in the beginning and 126.6MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 21:48:17,428 INFO L158 Benchmark]: Witness Printer took 60.57ms. Allocated memory is still 176.2MB. Free memory was 126.6MB in the beginning and 125.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:48:17,433 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.27ms. Allocated memory is still 176.2MB. Free memory was 145.5MB in the beginning and 138.2MB in the end (delta: 7.3MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.86ms. Allocated memory is still 176.2MB. Free memory was 138.2MB in the beginning and 137.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.61ms. Allocated memory is still 176.2MB. Free memory was 137.0MB in the beginning and 135.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 339.97ms. Allocated memory is still 176.2MB. Free memory was 135.7MB in the beginning and 141.1MB in the end (delta: -5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 316.52ms. Allocated memory is still 176.2MB. Free memory was 140.2MB in the beginning and 126.6MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 60.57ms. Allocated memory is still 176.2MB. Free memory was 126.6MB in the beginning and 125.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6] int q; [L9] int a, b; [L10] int *p1 = &a; [L11] int *p2 = p1; [L13] q = 0 VAL [a={5:0}, p1={5:0}, p2={5:0}, q=0] [L15] COND TRUE p1 == p2 VAL [a={5:0}, p1={5:0}, p2={5:0}, q=0] [L21] reach_error() VAL [a={5:0}, p1={5:0}, p2={5:0}, q=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-24 21:48:17,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e44fca5-8c67-439b-9032-c206dbd9ae4a/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE