./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test30-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test30-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --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 3055aa5e8d0f7166c6199867c275abf60313262b8446d59ec5e54caabc9c66a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:07:22,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:07:22,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:07:22,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:07:22,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:07:22,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:07:22,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:07:22,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:07:22,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:07:22,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:07:22,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:07:22,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:07:22,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:07:22,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:07:22,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:07:23,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:07:23,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:07:23,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:07:23,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:07:23,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:07:23,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:07:23,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:07:23,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:07:23,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:07:23,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:07:23,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:07:23,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:07:23,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:07:23,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:07:23,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:07:23,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:07:23,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:07:23,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:07:23,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:07:23,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:07:23,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:07:23,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:07:23,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:07:23,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:07:23,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:07:23,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:07:23,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:07:23,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:07:23,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:07:23,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:07:23,121 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:07:23,121 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:07:23,122 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:07:23,122 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:07:23,122 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:07:23,123 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:07:23,123 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:07:23,124 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:07:23,125 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:07:23,125 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:07:23,125 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:07:23,126 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:07:23,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:07:23,127 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:07:23,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:07:23,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:07:23,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:07:23,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:07:23,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:07:23,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:07:23,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:07:23,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:07:23,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:07:23,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:07:23,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:07:23,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:07:23,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:07:23,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:07:23,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:07:23,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:07:23,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:07:23,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:07:23,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:07:23,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:07:23,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:07:23,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:07:23,136 INFO L138 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_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3055aa5e8d0f7166c6199867c275abf60313262b8446d59ec5e54caabc9c66a5 [2021-11-07 01:07:23,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:07:23,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:07:23,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:07:23,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:07:23,523 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:07:23,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-regression/test30-2.c [2021-11-07 01:07:23,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/data/ea2daef39/5876c0be97fc490aa2309d039dd6e3e2/FLAGa18c0b596 [2021-11-07 01:07:24,292 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:07:24,295 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/sv-benchmarks/c/ldv-regression/test30-2.c [2021-11-07 01:07:24,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/data/ea2daef39/5876c0be97fc490aa2309d039dd6e3e2/FLAGa18c0b596 [2021-11-07 01:07:24,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/data/ea2daef39/5876c0be97fc490aa2309d039dd6e3e2 [2021-11-07 01:07:24,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:07:24,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:07:24,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:07:24,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:07:24,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:07:24,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:24,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32cfc0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24, skipping insertion in model container [2021-11-07 01:07:24,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:24,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:07:24,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:07:24,894 WARN L228 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_7739001c-8ec6-41c5-9cad-082c126e0911/sv-benchmarks/c/ldv-regression/test30-2.c[560,573] [2021-11-07 01:07:24,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:07:24,911 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:07:24,929 WARN L228 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_7739001c-8ec6-41c5-9cad-082c126e0911/sv-benchmarks/c/ldv-regression/test30-2.c[560,573] [2021-11-07 01:07:24,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:07:24,949 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:07:24,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24 WrapperNode [2021-11-07 01:07:24,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:07:24,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:07:24,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:07:24,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:07:24,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:24,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:24,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:07:24,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:07:24,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:07:24,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:07:25,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:25,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:25,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:25,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:25,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:25,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:25,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:25,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:07:25,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:07:25,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:07:25,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:07:25,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (1/1) ... [2021-11-07 01:07:25,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:07:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:25,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:07:25,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:07:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:07:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:07:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:07:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:07:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:07:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:07:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:07:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:07:25,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:07:25,587 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 01:07:25,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:25 BoogieIcfgContainer [2021-11-07 01:07:25,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:07:25,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:07:25,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:07:25,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:07:25,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:07:24" (1/3) ... [2021-11-07 01:07:25,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224a8208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:07:25, skipping insertion in model container [2021-11-07 01:07:25,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:24" (2/3) ... [2021-11-07 01:07:25,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224a8208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:07:25, skipping insertion in model container [2021-11-07 01:07:25,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:25" (3/3) ... [2021-11-07 01:07:25,617 INFO L111 eAbstractionObserver]: Analyzing ICFG test30-2.c [2021-11-07 01:07:25,623 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:07:25,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:07:25,704 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:07:25,713 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:07:25,713 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:07:25,731 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) [2021-11-07 01:07:25,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:07:25,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:25,737 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:07:25,738 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:07:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:25,746 INFO L85 PathProgramCache]: Analyzing trace with hash 49303, now seen corresponding path program 1 times [2021-11-07 01:07:25,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:25,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374099428] [2021-11-07 01:07:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:25,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:07:25,940 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:07:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:07:26,087 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:07:26,097 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:07:26,104 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:07:26,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:07:26,111 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:07:26,115 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:07:26,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:07:26 BoogieIcfgContainer [2021-11-07 01:07:26,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:07:26,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:07:26,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:07:26,166 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:07:26,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:25" (3/4) ... [2021-11-07 01:07:26,169 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:07:26,241 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:07:26,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:07:26,244 INFO L168 Benchmark]: Toolchain (without parser) took 1586.40 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 85.1 MB in the beginning and 102.7 MB in the end (delta: -17.6 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:26,244 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 113.2 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:07:26,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.48 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 84.9 MB in the beginning and 139.0 MB in the end (delta: -54.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:26,250 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 137.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:26,251 INFO L168 Benchmark]: Boogie Preprocessor took 27.12 ms. Allocated memory is still 163.6 MB. Free memory was 137.6 MB in the beginning and 136.6 MB in the end (delta: 999.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:07:26,253 INFO L168 Benchmark]: RCFGBuilder took 566.28 ms. Allocated memory is still 163.6 MB. Free memory was 136.3 MB in the beginning and 121.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:26,256 INFO L168 Benchmark]: TraceAbstraction took 566.65 ms. Allocated memory is still 163.6 MB. Free memory was 121.2 MB in the beginning and 104.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:26,257 INFO L168 Benchmark]: Witness Printer took 76.64 ms. Allocated memory is still 163.6 MB. Free memory was 104.4 MB in the beginning and 102.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:26,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 113.2 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.48 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 84.9 MB in the beginning and 139.0 MB in the end (delta: -54.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 137.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.12 ms. Allocated memory is still 163.6 MB. Free memory was 137.6 MB in the beginning and 136.6 MB in the end (delta: 999.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 566.28 ms. Allocated memory is still 163.6 MB. Free memory was 136.3 MB in the beginning and 121.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 566.65 ms. Allocated memory is still 163.6 MB. Free memory was 121.2 MB in the beginning and 104.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 76.64 ms. Allocated memory is still 163.6 MB. Free memory was 104.4 MB in the beginning and 102.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 33]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5] int a = 1, b; [L7-L9] struct dummy { int *a, *b; } global = {&a, &b}; [L23] struct dummy *pd = &global; [L18] \read(**pb) [L18] \read(**pb) [L13] EXPR \read(*pb) [L13] *pa = *pb [L27] EXPR \read(a) [L27] EXPR \read(b) VAL [a={5:0}, b={7:0}, global={3:0}] [L27] COND TRUE a != b [L33] reach_error() VAL [a={5:0}, b={7:0}, global={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, 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! [2021-11-07 01:07:26,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7739001c-8ec6-41c5-9cad-082c126e0911/bin/utaipan-UUZaoUuFF8/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