./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8 --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 40774f15dea268138f2179cc2f832c9729515e75ef9c65e50e7b347c749bb02c --- 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 [2022-12-13 17:47:22,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:47:22,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:47:22,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:47:22,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:47:22,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:47:22,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:47:22,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:47:22,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:47:22,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:47:22,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:47:22,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:47:22,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:47:22,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:47:22,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:47:22,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:47:22,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:47:22,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:47:22,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:47:22,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:47:22,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:47:22,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:47:22,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:47:22,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:47:22,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:47:22,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:47:22,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:47:22,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:47:22,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:47:22,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:47:22,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:47:22,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:47:22,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:47:22,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:47:22,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:47:22,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:47:22,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:47:22,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:47:22,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:47:22,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:47:22,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:47:22,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:47:22,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:47:22,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:47:22,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:47:22,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:47:23,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:47:23,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:47:23,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:47:23,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:47:23,001 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:47:23,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:47:23,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:47:23,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:47:23,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:47:23,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:47:23,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:47:23,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:47:23,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:47:23,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:47:23,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:47:23,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:47:23,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:47:23,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:47:23,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:47:23,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:47:23,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:47:23,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:47:23,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:47:23,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:47:23,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:47:23,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:47:23,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:47:23,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:47:23,005 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:47:23,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:47:23,005 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:47:23,005 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40774f15dea268138f2179cc2f832c9729515e75ef9c65e50e7b347c749bb02c [2022-12-13 17:47:23,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:47:23,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:47:23,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:47:23,219 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:47:23,219 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:47:23,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loop-acceleration/phases_2-1.c [2022-12-13 17:47:25,891 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:47:26,026 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:47:26,027 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/sv-benchmarks/c/loop-acceleration/phases_2-1.c [2022-12-13 17:47:26,031 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/data/f3424d896/1c449fbdb3f7404b85ce42c07f9cb8e5/FLAG2248ff762 [2022-12-13 17:47:26,042 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/data/f3424d896/1c449fbdb3f7404b85ce42c07f9cb8e5 [2022-12-13 17:47:26,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:47:26,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:47:26,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:47:26,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:47:26,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:47:26,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18da0ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26, skipping insertion in model container [2022-12-13 17:47:26,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:47:26,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:47:26,166 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_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/sv-benchmarks/c/loop-acceleration/phases_2-1.c[459,472] [2022-12-13 17:47:26,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:47:26,181 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:47:26,189 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_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/sv-benchmarks/c/loop-acceleration/phases_2-1.c[459,472] [2022-12-13 17:47:26,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:47:26,200 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:47:26,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26 WrapperNode [2022-12-13 17:47:26,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:47:26,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:47:26,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:47:26,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:47:26,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,222 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-12-13 17:47:26,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:47:26,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:47:26,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:47:26,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:47:26,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:47:26,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:47:26,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:47:26,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:47:26,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (1/1) ... [2022-12-13 17:47:26,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:47:26,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:47:26,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:47:26,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:47:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:47:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:47:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:47:26,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:47:26,341 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:47:26,343 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:47:26,422 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:47:26,426 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:47:26,426 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:47:26,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:47:26 BoogieIcfgContainer [2022-12-13 17:47:26,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:47:26,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:47:26,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:47:26,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:47:26,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:47:26" (1/3) ... [2022-12-13 17:47:26,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b7fa4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:47:26, skipping insertion in model container [2022-12-13 17:47:26,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:47:26" (2/3) ... [2022-12-13 17:47:26,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b7fa4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:47:26, skipping insertion in model container [2022-12-13 17:47:26,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:47:26" (3/3) ... [2022-12-13 17:47:26,434 INFO L112 eAbstractionObserver]: Analyzing ICFG phases_2-1.c [2022-12-13 17:47:26,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:47:26,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:47:26,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:47:26,489 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;@58170f57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:47:26,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:47:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-12-13 17:47:26,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 17:47:26,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:47:26,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:47:26,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:47:26,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:47:26,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1807274184, now seen corresponding path program 1 times [2022-12-13 17:47:26,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:47:26,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245870859] [2022-12-13 17:47:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:47:26,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:47:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:47:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:47:26,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245870859] [2022-12-13 17:47:26,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245870859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:47:26,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:47:26,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:47:26,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056377816] [2022-12-13 17:47:26,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:47:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:47:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:47:26,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:47:26,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:47:26,633 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-12-13 17:47:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:47:26,644 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2022-12-13 17:47:26,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:47:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2022-12-13 17:47:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:47:26,651 INFO L225 Difference]: With dead ends: 21 [2022-12-13 17:47:26,651 INFO L226 Difference]: Without dead ends: 9 [2022-12-13 17:47:26,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:47:26,656 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:47:26,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:47:26,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-13 17:47:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-13 17:47:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-12-13 17:47:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-12-13 17:47:26,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2022-12-13 17:47:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:47:26,680 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-12-13 17:47:26,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-12-13 17:47:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-12-13 17:47:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 17:47:26,681 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:47:26,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:47:26,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:47:26,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:47:26,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:47:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1806976274, now seen corresponding path program 1 times [2022-12-13 17:47:26,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:47:26,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223705193] [2022-12-13 17:47:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:47:26,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:47:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:47:26,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:47:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:47:26,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:47:26,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:47:26,727 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 17:47:26,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:47:26,736 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 17:47:26,739 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:47:26,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:47:26 BoogieIcfgContainer [2022-12-13 17:47:26,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:47:26,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:47:26,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:47:26,751 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:47:26,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:47:26" (3/4) ... [2022-12-13 17:47:26,753 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 17:47:26,775 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 17:47:26,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:47:26,775 INFO L158 Benchmark]: Toolchain (without parser) took 730.01ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 99.0MB in the beginning and 129.5MB in the end (delta: -30.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:47:26,776 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:47:26,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.50ms. Allocated memory is still 134.2MB. Free memory was 98.5MB in the beginning and 88.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 17:47:26,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.56ms. Allocated memory is still 134.2MB. Free memory was 88.7MB in the beginning and 87.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:47:26,777 INFO L158 Benchmark]: Boogie Preprocessor took 13.40ms. Allocated memory is still 134.2MB. Free memory was 87.1MB in the beginning and 86.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:47:26,777 INFO L158 Benchmark]: RCFGBuilder took 190.89ms. Allocated memory is still 134.2MB. Free memory was 86.1MB in the beginning and 76.1MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 17:47:26,777 INFO L158 Benchmark]: TraceAbstraction took 321.09ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 75.6MB in the beginning and 130.8MB in the end (delta: -55.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:47:26,778 INFO L158 Benchmark]: Witness Printer took 23.86ms. Allocated memory is still 161.5MB. Free memory was 130.8MB in the beginning and 129.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:47:26,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.50ms. Allocated memory is still 134.2MB. Free memory was 98.5MB in the beginning and 88.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.56ms. Allocated memory is still 134.2MB. Free memory was 88.7MB in the beginning and 87.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.40ms. Allocated memory is still 134.2MB. Free memory was 87.1MB in the beginning and 86.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 190.89ms. Allocated memory is still 134.2MB. Free memory was 86.1MB in the beginning and 76.1MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 321.09ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 75.6MB in the beginning and 130.8MB in the end (delta: -55.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 23.86ms. Allocated memory is still 161.5MB. Free memory was 130.8MB in the beginning and 129.5MB in the end (delta: 1.2MB). 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) VAL [x=1, y=1] [L23] COND FALSE !(x < y) VAL [x=1, y=1] [L31] CALL __VERIFIER_assert(x != y) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L12] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-12-13 17:47:26,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33af3270-da09-4f69-b2ef-2bc6ad5c36cb/bin/uautomizer-uyxdKDjOR8/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