./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test26-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test26-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5617f713954d7209d6b7210dc855bccb3ec884121999fe1b009aa3de39a1bff --- 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-dbf71c6-m [2022-10-17 10:34:48,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:34:48,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:34:48,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:34:48,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:34:48,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:34:48,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:34:48,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:34:48,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:34:48,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:34:48,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:34:48,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:34:48,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:34:48,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:34:48,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:34:48,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:34:48,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:34:48,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:34:48,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:34:48,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:34:48,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:34:48,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:34:48,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:34:48,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:34:48,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:34:48,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:34:48,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:34:48,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:34:48,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:34:48,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:34:48,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:34:48,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:34:48,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:34:48,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:34:48,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:34:48,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:34:48,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:34:48,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:34:48,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:34:48,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:34:48,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:34:48,313 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:34:48,359 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:34:48,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:34:48,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:34:48,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:34:48,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:34:48,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:34:48,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:34:48,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:34:48,363 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:34:48,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:34:48,364 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:34:48,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:34:48,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:34:48,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:34:48,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:34:48,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:34:48,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:34:48,366 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:34:48,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:34:48,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:34:48,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:34:48,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:34:48,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:34:48,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:34:48,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:34:48,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:34:48,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:34:48,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:34:48,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:34:48,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:34:48,371 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:34:48,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:34:48,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:34:48,372 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_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5617f713954d7209d6b7210dc855bccb3ec884121999fe1b009aa3de39a1bff [2022-10-17 10:34:48,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:34:48,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:34:48,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:34:48,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:34:48,766 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:34:48,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-regression/test26-2.c [2022-10-17 10:34:48,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/data/606fa724a/b4a189e4fee44c51a09cd206b30449b3/FLAG106fb44f2 [2022-10-17 10:34:49,388 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:34:49,389 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/sv-benchmarks/c/ldv-regression/test26-2.c [2022-10-17 10:34:49,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/data/606fa724a/b4a189e4fee44c51a09cd206b30449b3/FLAG106fb44f2 [2022-10-17 10:34:49,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/data/606fa724a/b4a189e4fee44c51a09cd206b30449b3 [2022-10-17 10:34:49,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:34:49,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:34:49,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:34:49,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:34:49,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:34:49,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:34:49" (1/1) ... [2022-10-17 10:34:49,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd54526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:49, skipping insertion in model container [2022-10-17 10:34:49,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:34:49" (1/1) ... [2022-10-17 10:34:49,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:34:49,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:34:50,069 WARN L230 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_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/sv-benchmarks/c/ldv-regression/test26-2.c[493,506] [2022-10-17 10:34:50,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:34:50,089 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:34:50,114 WARN L230 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_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/sv-benchmarks/c/ldv-regression/test26-2.c[493,506] [2022-10-17 10:34:50,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:34:50,136 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:34:50,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50 WrapperNode [2022-10-17 10:34:50,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:34:50,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:34:50,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:34:50,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:34:50,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,185 INFO L138 Inliner]: procedures = 12, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2022-10-17 10:34:50,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:34:50,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:34:50,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:34:50,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:34:50,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:34:50,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:34:50,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:34:50,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:34:50,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (1/1) ... [2022-10-17 10:34:50,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:34:50,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:50,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:34:50,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:34:50,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:34:50,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:34:50,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:34:50,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:34:50,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:34:50,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:34:50,416 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:34:50,418 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:34:50,527 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:34:50,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:34:50,538 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:34:50,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:34:50 BoogieIcfgContainer [2022-10-17 10:34:50,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:34:50,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:34:50,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:34:50,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:34:50,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:34:49" (1/3) ... [2022-10-17 10:34:50,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d3bb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:34:50, skipping insertion in model container [2022-10-17 10:34:50,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:50" (2/3) ... [2022-10-17 10:34:50,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d3bb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:34:50, skipping insertion in model container [2022-10-17 10:34:50,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:34:50" (3/3) ... [2022-10-17 10:34:50,551 INFO L112 eAbstractionObserver]: Analyzing ICFG test26-2.c [2022-10-17 10:34:50,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:34:50,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:34:50,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:34:50,645 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@2596b556, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:34:50,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:34:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-10-17 10:34:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 10:34:50,659 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:50,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 10:34:50,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:50,667 INFO L85 PathProgramCache]: Analyzing trace with hash 28692805, now seen corresponding path program 1 times [2022-10-17 10:34:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679394280] [2022-10-17 10:34:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:34:50,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:34:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:34:50,876 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:34:50,878 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:34:50,880 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:34:50,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:34:50,888 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 10:34:50,894 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:34:50,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:34:50 BoogieIcfgContainer [2022-10-17 10:34:50,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:34:50,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:34:50,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:34:50,920 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:34:50,921 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:34:50" (3/4) ... [2022-10-17 10:34:50,924 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 10:34:50,969 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:34:50,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:34:50,971 INFO L158 Benchmark]: Toolchain (without parser) took 1219.34ms. Allocated memory is still 125.8MB. Free memory was 87.1MB in the beginning and 72.3MB in the end (delta: 14.8MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-10-17 10:34:50,971 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory was 104.2MB in the beginning and 104.2MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:34:50,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.09ms. Allocated memory is still 125.8MB. Free memory was 86.9MB in the beginning and 100.6MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:34:50,973 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.88ms. Allocated memory is still 125.8MB. Free memory was 100.6MB in the beginning and 99.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:34:50,974 INFO L158 Benchmark]: Boogie Preprocessor took 43.83ms. Allocated memory is still 125.8MB. Free memory was 99.1MB in the beginning and 98.1MB in the end (delta: 920.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:34:50,975 INFO L158 Benchmark]: RCFGBuilder took 308.92ms. Allocated memory is still 125.8MB. Free memory was 98.1MB in the beginning and 88.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:34:50,976 INFO L158 Benchmark]: TraceAbstraction took 376.26ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 74.0MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 10:34:50,976 INFO L158 Benchmark]: Witness Printer took 49.42ms. Allocated memory is still 125.8MB. Free memory was 74.0MB in the beginning and 72.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:34:50,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory was 104.2MB in the beginning and 104.2MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.09ms. Allocated memory is still 125.8MB. Free memory was 86.9MB in the beginning and 100.6MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.88ms. Allocated memory is still 125.8MB. Free memory was 100.6MB in the beginning and 99.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.83ms. Allocated memory is still 125.8MB. Free memory was 99.1MB in the beginning and 98.1MB in the end (delta: 920.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 308.92ms. Allocated memory is still 125.8MB. Free memory was 98.1MB in the beginning and 88.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 376.26ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 74.0MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 49.42ms. Allocated memory is still 125.8MB. Free memory was 74.0MB in the beginning and 72.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5-L7] struct dummy { int a, b; } global = {0, 1}; VAL [global={4:0}] [L16] struct dummy *pd = &global; [L18] CALL assign(&pd->b, &pd->b) [L11] EXPR \read(*pb) [L11] *pa = *pb [L18] RET assign(&pd->b, &pd->b) [L20] EXPR pd->a [L20] EXPR global.b VAL [global={4:0}, global.b=1, pd={4:0}, pd->a=0] [L20] COND TRUE pd->a != global.b [L26] reach_error() VAL [global={4:0}, pd={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 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=9occurred 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, 5 NumberOfCodeBlocks, 5 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! [2022-10-17 10:34:51,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c69301-a2cd-4fb4-b61a-44d0fc5bcf7f/bin/uautomizer-J5u9QxTXDZ/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