./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_int.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs --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 cdaaa62c12cda1d5ef1bfbfdcef4ae5f9da69605 .................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:18:08,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:18:08,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:18:08,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:18:08,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:18:08,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:18:08,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:18:08,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:18:08,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:18:08,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:18:08,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:18:08,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:18:08,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:18:08,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:18:08,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:18:08,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:18:08,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:18:08,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:18:08,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:18:08,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:18:08,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:18:08,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:18:08,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:18:08,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:18:08,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:18:08,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:18:08,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:18:08,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:18:08,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:18:08,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:18:08,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:18:08,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:18:08,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:18:08,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:18:08,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:18:08,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:18:08,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:18:08,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:18:08,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:18:08,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:18:08,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:18:08,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:18:08,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:18:08,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:18:08,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:18:08,629 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:18:08,629 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:18:08,630 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:18:08,630 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:18:08,630 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:18:08,630 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:18:08,631 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:18:08,637 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:18:08,638 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:18:08,638 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:18:08,638 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:18:08,639 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:18:08,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:18:08,640 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:18:08,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:18:08,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:18:08,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:18:08,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:18:08,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:18:08,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:18:08,641 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:18:08,641 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:18:08,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:18:08,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:18:08,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:18:08,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:18:08,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:18:08,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:18:08,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:18:08,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:18:08,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:18:08,645 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:18:08,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:18:08,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:18:08,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:18:08,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:18:08,646 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdaaa62c12cda1d5ef1bfbfdcef4ae5f9da69605 [2021-10-16 02:18:08,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:18:08,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:18:08,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:18:08,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:18:08,991 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:18:08,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2021-10-16 02:18:09,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/data/cc7f7429e/aabe4e99b95743d1976e3d4a062c8463/FLAGf8007b6f3 [2021-10-16 02:18:09,487 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:18:09,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2021-10-16 02:18:09,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/data/cc7f7429e/aabe4e99b95743d1976e3d4a062c8463/FLAGf8007b6f3 [2021-10-16 02:18:09,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/data/cc7f7429e/aabe4e99b95743d1976e3d4a062c8463 [2021-10-16 02:18:09,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:18:09,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:18:09,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:18:09,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:18:09,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:18:09,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4be35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09, skipping insertion in model container [2021-10-16 02:18:09,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:18:09,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:18:10,111 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/sv-benchmarks/c/ldv-regression/mutex_lock_int.i[293,306] [2021-10-16 02:18:10,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:18:10,140 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:18:10,151 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/sv-benchmarks/c/ldv-regression/mutex_lock_int.i[293,306] [2021-10-16 02:18:10,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:18:10,168 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:18:10,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10 WrapperNode [2021-10-16 02:18:10,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:18:10,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:18:10,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:18:10,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:18:10,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:18:10,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:18:10,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:18:10,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:18:10,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:18:10,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:18:10,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:18:10,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:18:10,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (1/1) ... [2021-10-16 02:18:10,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:18:10,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:18:10,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:18:10,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:18:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:18:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:18:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:18:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:18:10,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:18:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:18:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:18:10,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:18:10,630 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:18:10,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:18:10 BoogieIcfgContainer [2021-10-16 02:18:10,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:18:10,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:18:10,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:18:10,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:18:10,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:18:09" (1/3) ... [2021-10-16 02:18:10,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5322f587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:18:10, skipping insertion in model container [2021-10-16 02:18:10,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:10" (2/3) ... [2021-10-16 02:18:10,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5322f587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:18:10, skipping insertion in model container [2021-10-16 02:18:10,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:18:10" (3/3) ... [2021-10-16 02:18:10,640 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.i [2021-10-16 02:18:10,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:18:10,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:18:10,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:18:10,703 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:18:10,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:18:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:10,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:18:10,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:10,722 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:18:10,723 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:10,728 INFO L82 PathProgramCache]: Analyzing trace with hash 63588, now seen corresponding path program 1 times [2021-10-16 02:18:10,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:18:10,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868965020] [2021-10-16 02:18:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:10,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:18:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:10,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:18:10,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868965020] [2021-10-16 02:18:10,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868965020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:18:10,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:18:10,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:18:10,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810021544] [2021-10-16 02:18:10,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:18:10,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:18:10,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:18:10,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:18:10,975 INFO L87 Difference]: Start difference. First operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 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 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:18:11,006 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-16 02:18:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:18:11,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-16 02:18:11,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:18:11,018 INFO L225 Difference]: With dead ends: 16 [2021-10-16 02:18:11,018 INFO L226 Difference]: Without dead ends: 6 [2021-10-16 02:18:11,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:18:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-16 02:18:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-16 02:18:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2021-10-16 02:18:11,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 3 [2021-10-16 02:18:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:18:11,050 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2021-10-16 02:18:11,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2021-10-16 02:18:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:18:11,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:11,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:18:11,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:18:11,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:11,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:11,057 INFO L82 PathProgramCache]: Analyzing trace with hash 61311417, now seen corresponding path program 1 times [2021-10-16 02:18:11,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:18:11,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141715241] [2021-10-16 02:18:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:11,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:18:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:18:11,104 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:18:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:18:11,151 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:18:11,151 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:18:11,153 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:18:11,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:18:11,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:18:11,162 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:18:11,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:18:11 BoogieIcfgContainer [2021-10-16 02:18:11,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:18:11,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:18:11,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:18:11,181 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:18:11,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:18:10" (3/4) ... [2021-10-16 02:18:11,184 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:18:11,225 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:18:11,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:18:11,228 INFO L168 Benchmark]: Toolchain (without parser) took 1318.05 ms. Allocated memory is still 109.1 MB. Free memory was 74.2 MB in the beginning and 48.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:11,228 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 90.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:18:11,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.37 ms. Allocated memory is still 109.1 MB. Free memory was 74.0 MB in the beginning and 86.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:11,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.60 ms. Allocated memory is still 109.1 MB. Free memory was 86.8 MB in the beginning and 85.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:11,238 INFO L168 Benchmark]: Boogie Preprocessor took 19.61 ms. Allocated memory is still 109.1 MB. Free memory was 85.2 MB in the beginning and 84.2 MB in the end (delta: 971.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:18:11,239 INFO L168 Benchmark]: RCFGBuilder took 408.06 ms. Allocated memory is still 109.1 MB. Free memory was 84.2 MB in the beginning and 73.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:11,240 INFO L168 Benchmark]: TraceAbstraction took 546.93 ms. Allocated memory is still 109.1 MB. Free memory was 73.1 MB in the beginning and 50.2 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:11,241 INFO L168 Benchmark]: Witness Printer took 44.59 ms. Allocated memory is still 109.1 MB. Free memory was 50.2 MB in the beginning and 48.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:11,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 90.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.37 ms. Allocated memory is still 109.1 MB. Free memory was 74.0 MB in the beginning and 86.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.60 ms. Allocated memory is still 109.1 MB. Free memory was 86.8 MB in the beginning and 85.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.61 ms. Allocated memory is still 109.1 MB. Free memory was 85.2 MB in the beginning and 84.2 MB in the end (delta: 971.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 408.06 ms. Allocated memory is still 109.1 MB. Free memory was 84.2 MB in the beginning and 73.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 546.93 ms. Allocated memory is still 109.1 MB. Free memory was 73.1 MB in the beginning and 50.2 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 44.59 ms. Allocated memory is still 109.1 MB. Free memory was 50.2 MB in the beginning and 48.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int m; [L33] m = 0 [L20] EXPR \read(*a) [L20] COND FALSE !(*a == 1) [L21] *a = 1 [L20] EXPR \read(*a) [L20] COND TRUE *a == 1 [L16] reach_error() - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 468.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.7ms, AutomataDifference: 67.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 0 SDslu, 2 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.5ms SsaConstructionTime, 58.9ms SatisfiabilityAnalysisTime, 95.4ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 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! [2021-10-16 02:18:11,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdca09c-b56a-4a70-a1d2-cf82adcde620/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...