./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 2329fc70 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_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh --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 23f21f1d12fc9578c569fbf2e71b5421b3d1aa45a00983439dd99e97e66f1c7b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:33:53,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:33:53,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:33:53,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:33:53,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:33:53,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:33:53,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:33:53,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:33:53,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:33:53,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:33:53,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:33:53,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:33:53,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:33:53,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:33:53,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:33:53,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:33:53,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:33:53,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:33:53,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:33:53,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:33:53,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:33:53,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:33:53,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:33:53,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:33:53,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:33:53,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:33:53,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:33:53,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:33:53,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:33:53,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:33:53,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:33:53,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:33:53,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:33:53,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:33:53,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:33:53,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:33:53,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:33:53,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:33:53,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:33:53,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:33:53,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:33:53,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:33:53,201 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:33:53,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:33:53,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:33:53,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:33:53,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:33:53,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:33:53,203 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:33:53,203 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:33:53,204 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:33:53,204 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:33:53,204 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:33:53,204 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:33:53,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:33:53,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:33:53,205 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:33:53,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:33:53,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:33:53,205 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:33:53,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:33:53,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:33:53,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:33:53,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:33:53,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:33:53,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:33:53,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:33:53,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:33:53,207 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:33:53,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:33:53,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:33:53,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:33:53,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:33:53,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:33:53,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:33:53,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:33:53,209 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:33:53,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:33:53,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:33:53,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:33:53,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:33:53,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:33:53,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:33:53,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f21f1d12fc9578c569fbf2e71b5421b3d1aa45a00983439dd99e97e66f1c7b [2022-12-14 13:33:53,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:33:53,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:33:53,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:33:53,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:33:53,408 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:33:53,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-regression/test02.c [2022-12-14 13:33:56,086 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:33:56,217 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:33:56,217 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/sv-benchmarks/c/ldv-regression/test02.c [2022-12-14 13:33:56,221 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/data/ed82c5933/96049cb94b3542f2b427de7817342682/FLAG80ff326f8 [2022-12-14 13:33:56,232 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/data/ed82c5933/96049cb94b3542f2b427de7817342682 [2022-12-14 13:33:56,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:33:56,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:33:56,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:33:56,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:33:56,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:33:56,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6508e9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56, skipping insertion in model container [2022-12-14 13:33:56,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:33:56,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:33:56,367 WARN L237 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_938d07e6-6357-4ad8-9b30-139019e9ef8b/sv-benchmarks/c/ldv-regression/test02.c[413,426] [2022-12-14 13:33:56,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:33:56,380 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:33:56,391 WARN L237 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_938d07e6-6357-4ad8-9b30-139019e9ef8b/sv-benchmarks/c/ldv-regression/test02.c[413,426] [2022-12-14 13:33:56,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:33:56,402 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:33:56,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56 WrapperNode [2022-12-14 13:33:56,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:33:56,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:33:56,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:33:56,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:33:56,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,426 INFO L138 Inliner]: procedures = 12, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-12-14 13:33:56,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:33:56,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:33:56,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:33:56,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:33:56,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:33:56,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:33:56,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:33:56,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:33:56,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (1/1) ... [2022-12-14 13:33:56,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:33:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:33:56,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:33:56,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:33:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:33:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:33:56,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:33:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:33:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:33:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:33:56,547 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:33:56,549 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:33:56,615 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:33:56,629 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:33:56,629 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:33:56,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:33:56 BoogieIcfgContainer [2022-12-14 13:33:56,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:33:56,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:33:56,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:33:56,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:33:56,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:33:56" (1/3) ... [2022-12-14 13:33:56,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe78586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:33:56, skipping insertion in model container [2022-12-14 13:33:56,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:33:56" (2/3) ... [2022-12-14 13:33:56,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe78586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:33:56, skipping insertion in model container [2022-12-14 13:33:56,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:33:56" (3/3) ... [2022-12-14 13:33:56,638 INFO L112 eAbstractionObserver]: Analyzing ICFG test02.c [2022-12-14 13:33:56,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:33:56,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:33:56,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:33:56,692 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@192846dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:33:56,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:33:56,695 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) [2022-12-14 13:33:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 13:33:56,700 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:33:56,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 13:33:56,701 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:33:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:33:56,705 INFO L85 PathProgramCache]: Analyzing trace with hash 43409, now seen corresponding path program 1 times [2022-12-14 13:33:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:33:56,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918467829] [2022-12-14 13:33:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:33:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:33:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:33:56,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:33:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:33:56,804 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:33:56,806 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:33:56,807 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:33:56,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:33:56,812 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 13:33:56,816 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:33:56,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:33:56 BoogieIcfgContainer [2022-12-14 13:33:56,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:33:56,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:33:56,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:33:56,830 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:33:56,830 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:33:56" (3/4) ... [2022-12-14 13:33:56,832 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 13:33:56,857 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:33:56,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:33:56,867 INFO L158 Benchmark]: Toolchain (without parser) took 631.27ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 85.8MB in the beginning and 116.9MB in the end (delta: -31.1MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2022-12-14 13:33:56,867 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 119.5MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:33:56,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.06ms. Allocated memory is still 119.5MB. Free memory was 85.4MB in the beginning and 75.7MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 13:33:56,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.16ms. Allocated memory is still 119.5MB. Free memory was 75.7MB in the beginning and 74.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:33:56,869 INFO L158 Benchmark]: Boogie Preprocessor took 14.67ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 73.3MB in the end (delta: 983.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:33:56,869 INFO L158 Benchmark]: RCFGBuilder took 189.38ms. Allocated memory is still 119.5MB. Free memory was 73.3MB in the beginning and 63.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 13:33:56,870 INFO L158 Benchmark]: TraceAbstraction took 196.52ms. Allocated memory is still 119.5MB. Free memory was 63.1MB in the beginning and 49.8MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 13:33:56,870 INFO L158 Benchmark]: Witness Printer took 35.04ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 49.8MB in the beginning and 116.9MB in the end (delta: -67.1MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2022-12-14 13:33:56,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 119.5MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.06ms. Allocated memory is still 119.5MB. Free memory was 85.4MB in the beginning and 75.7MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.16ms. Allocated memory is still 119.5MB. Free memory was 75.7MB in the beginning and 74.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.67ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 73.3MB in the end (delta: 983.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 189.38ms. Allocated memory is still 119.5MB. Free memory was 73.3MB in the beginning and 63.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 196.52ms. Allocated memory is still 119.5MB. Free memory was 63.1MB in the beginning and 49.8MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 35.04ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 49.8MB in the beginning and 116.9MB in the end (delta: -67.1MB). Peak memory consumption was 7.0MB. 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: 0.1s, 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! [2022-12-14 13:33:56,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_938d07e6-6357-4ad8-9b30-139019e9ef8b/bin/utaipan-gh47qXpMRh/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