./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test28-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test28-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d382873608f47f58e61612d5190ceb3fce961896aaa2cb7a799c0e7d7be98b0e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:24:33,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:24:34,009 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:24:34,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:24:34,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:24:34,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:24:34,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:24:34,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:24:34,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:24:34,065 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:24:34,065 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:24:34,066 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:24:34,067 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:24:34,069 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:24:34,069 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:24:34,069 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:24:34,070 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:24:34,070 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:24:34,071 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:24:34,071 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:24:34,072 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:24:34,073 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:24:34,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:24:34,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:24:34,075 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:24:34,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:24:34,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:24:34,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:24:34,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:24:34,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:24:34,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:24:34,079 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:24:34,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:24:34,079 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:24:34,080 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:24:34,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:24:34,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:34,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:24:34,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:24:34,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:24:34,081 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:24:34,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:24:34,082 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:24:34,082 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:24:34,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:24:34,083 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d382873608f47f58e61612d5190ceb3fce961896aaa2cb7a799c0e7d7be98b0e [2023-11-19 05:24:34,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:24:34,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:24:34,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:24:34,408 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:24:34,408 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:24:34,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-regression/test28-1.c [2023-11-19 05:24:37,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:24:37,735 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:24:37,736 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/sv-benchmarks/c/ldv-regression/test28-1.c [2023-11-19 05:24:37,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/data/f2968774d/7b20d5f4ed394b7ca1e70cdc315b2ad2/FLAG0231feb9e [2023-11-19 05:24:37,762 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/data/f2968774d/7b20d5f4ed394b7ca1e70cdc315b2ad2 [2023-11-19 05:24:37,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:24:37,770 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:24:37,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:37,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:24:37,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:24:37,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:37" (1/1) ... [2023-11-19 05:24:37,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38efe05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:37, skipping insertion in model container [2023-11-19 05:24:37,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:37" (1/1) ... [2023-11-19 05:24:37,802 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:38,004 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_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/sv-benchmarks/c/ldv-regression/test28-1.c[613,626] [2023-11-19 05:24:38,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:38,028 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:24:38,044 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_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/sv-benchmarks/c/ldv-regression/test28-1.c[613,626] [2023-11-19 05:24:38,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:38,057 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:24:38,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38 WrapperNode [2023-11-19 05:24:38,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:38,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:38,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:24:38,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:24:38,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,099 INFO L138 Inliner]: procedures = 13, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-11-19 05:24:38,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:38,100 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:24:38,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:24:38,100 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:24:38,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:24:38,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:24:38,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:24:38,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:24:38,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (1/1) ... [2023-11-19 05:24:38,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:38,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:38,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:24:38,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:24:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:24:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:24:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:24:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:24:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:24:38,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:24:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:24:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:24:38,302 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:24:38,305 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:24:38,485 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:24:38,584 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:24:38,587 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:24:38,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:38 BoogieIcfgContainer [2023-11-19 05:24:38,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:24:38,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:24:38,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:24:38,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:24:38,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:24:37" (1/3) ... [2023-11-19 05:24:38,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b8a7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:38, skipping insertion in model container [2023-11-19 05:24:38,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:38" (2/3) ... [2023-11-19 05:24:38,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b8a7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:38, skipping insertion in model container [2023-11-19 05:24:38,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:38" (3/3) ... [2023-11-19 05:24:38,605 INFO L112 eAbstractionObserver]: Analyzing ICFG test28-1.c [2023-11-19 05:24:38,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:24:38,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:24:38,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:24:38,667 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=FINITE_AUTOMATA, 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;@6bf06024, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:24:38,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:24:38,671 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) [2023-11-19 05:24:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:24:38,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:38,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:24:38,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:38,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash 62084, now seen corresponding path program 1 times [2023-11-19 05:24:38,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:38,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506103202] [2023-11-19 05:24:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:38,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:24:38,820 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:24:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:24:38,894 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:24:38,895 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:24:38,896 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:24:38,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:24:38,902 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:24:38,906 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:24:38,942 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-19 05:24:38,943 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short7 could not be translated [2023-11-19 05:24:38,943 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-19 05:24:38,943 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-19 05:24:38,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:24:38 BoogieIcfgContainer [2023-11-19 05:24:38,950 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:24:38,951 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:24:38,951 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:24:38,951 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:24:38,954 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:38" (3/4) ... [2023-11-19 05:24:38,954 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 05:24:38,965 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-19 05:24:38,965 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-19 05:24:38,966 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short7 could not be translated [2023-11-19 05:24:38,966 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-19 05:24:39,026 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:24:39,026 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:24:39,033 INFO L158 Benchmark]: Toolchain (without parser) took 1256.82ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 112.1MB in the beginning and 159.8MB in the end (delta: -47.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:39,034 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 159.4MB. Free memory is still 105.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:39,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.55ms. Allocated memory is still 159.4MB. Free memory was 112.1MB in the beginning and 101.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:24:39,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.99ms. Allocated memory is still 159.4MB. Free memory was 101.1MB in the beginning and 100.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:24:39,036 INFO L158 Benchmark]: Boogie Preprocessor took 28.36ms. Allocated memory is still 159.4MB. Free memory was 100.0MB in the beginning and 98.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:39,036 INFO L158 Benchmark]: RCFGBuilder took 463.57ms. Allocated memory is still 159.4MB. Free memory was 98.9MB in the beginning and 84.3MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:24:39,037 INFO L158 Benchmark]: TraceAbstraction took 353.83ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 83.3MB in the beginning and 161.7MB in the end (delta: -78.4MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2023-11-19 05:24:39,039 INFO L158 Benchmark]: Witness Printer took 75.41ms. Allocated memory is still 192.9MB. Free memory was 161.7MB in the beginning and 159.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:24:39,044 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 159.4MB. Free memory is still 105.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.55ms. Allocated memory is still 159.4MB. Free memory was 112.1MB in the beginning and 101.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.99ms. Allocated memory is still 159.4MB. Free memory was 101.1MB in the beginning and 100.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.36ms. Allocated memory is still 159.4MB. Free memory was 100.0MB in the beginning and 98.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 463.57ms. Allocated memory is still 159.4MB. Free memory was 98.9MB in the beginning and 84.3MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 353.83ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 83.3MB in the beginning and 161.7MB in the end (delta: -78.4MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Witness Printer took 75.41ms. Allocated memory is still 192.9MB. Free memory was 161.7MB in the beginning and 159.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] struct dummy d1, d2; [L15] int n = __VERIFIER_nondet_int(); [L16] struct dummy *pd = n ? &d1 : &d2; [L17] COND TRUE pd == &d2 [L18] pd->a = 0 [L19] pd->b = __VERIFIER_nondet_int() [L23] pd == &d2 && d2.b != 0 [L23] EXPR d2.b [L23] pd == &d2 && d2.b != 0 VAL [d1={5:0}, d2={6:0}, n=0, pd={6:0}] [L23] COND TRUE pd == &d2 && d2.b != 0 [L29] reach_error() VAL [d1={5:0}, d2={6:0}, n=0, pd={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 0.1s 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! [2023-11-19 05:24:39,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2320fa9-e480-4a38-8bb9-95d98ae66cd5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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