./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF --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 3fabbb4366f4018d2566a269c32a869eae5327dd4c35f2c68a01653f56969989 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:57:24,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:57:24,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:57:24,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:57:24,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:57:24,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:57:24,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:57:24,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:57:24,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:57:24,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:57:24,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:57:24,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:57:24,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:57:24,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:57:24,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:57:24,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:57:24,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:57:24,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:57:24,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:57:24,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:57:24,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:57:24,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:57:24,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:57:24,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:57:24,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:57:24,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:57:24,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:57:24,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:57:24,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:57:24,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:57:24,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:57:24,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:57:24,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:57:24,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:57:24,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:57:24,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:57:24,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:57:24,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:57:24,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:57:24,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:57:24,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:57:24,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:57:24,525 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:57:24,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:57:24,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:57:24,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:57:24,527 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:57:24,528 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:57:24,528 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:57:24,528 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:57:24,528 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:57:24,529 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:57:24,530 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:57:24,530 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:57:24,530 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:57:24,531 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:57:24,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:57:24,531 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:57:24,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:57:24,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:57:24,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:57:24,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:57:24,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:57:24,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:57:24,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:57:24,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:57:24,534 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:57:24,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:57:24,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:57:24,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:57:24,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:57:24,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:57:24,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:57:24,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:57:24,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:57:24,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:57:24,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:57:24,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:57:24,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:57:24,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:57:24,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:57:24,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:57:24,538 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_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fabbb4366f4018d2566a269c32a869eae5327dd4c35f2c68a01653f56969989 [2021-11-12 22:57:24,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:57:24,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:57:24,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:57:24,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:57:24,841 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:57:24,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c [2021-11-12 22:57:24,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data/d2ac7b3b2/270028250f0f43c7b5089f87e7fa90a0/FLAG026431905 [2021-11-12 22:57:25,446 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:57:25,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c [2021-11-12 22:57:25,458 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data/d2ac7b3b2/270028250f0f43c7b5089f87e7fa90a0/FLAG026431905 [2021-11-12 22:57:25,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data/d2ac7b3b2/270028250f0f43c7b5089f87e7fa90a0 [2021-11-12 22:57:25,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:57:25,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:57:25,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:57:25,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:57:25,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:57:25,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:57:25" (1/1) ... [2021-11-12 22:57:25,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4856ce35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:25, skipping insertion in model container [2021-11-12 22:57:25,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:57:25" (1/1) ... [2021-11-12 22:57:25,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:57:25,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:57:26,046 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_7f12d6e9-f950-4a56-9091-0b0a829e26bd/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c[555,568] [2021-11-12 22:57:26,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:57:26,067 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:57:26,079 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_7f12d6e9-f950-4a56-9091-0b0a829e26bd/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c[555,568] [2021-11-12 22:57:26,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:57:26,097 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:57:26,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26 WrapperNode [2021-11-12 22:57:26,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:57:26,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:57:26,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:57:26,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:57:26,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:57:26,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:57:26,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:57:26,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:57:26,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:57:26,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:57:26,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:57:26,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:57:26,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (1/1) ... [2021-11-12 22:57:26,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:57:26,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:57:26,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:57:26,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:57:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:57:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:57:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:57:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:57:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:57:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:57:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:57:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:57:26,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:57:26,520 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:57:26,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:26 BoogieIcfgContainer [2021-11-12 22:57:26,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:57:26,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:57:26,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:57:26,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:57:26,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:57:25" (1/3) ... [2021-11-12 22:57:26,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23647858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:26, skipping insertion in model container [2021-11-12 22:57:26,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:26" (2/3) ... [2021-11-12 22:57:26,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23647858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:26, skipping insertion in model container [2021-11-12 22:57:26,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:26" (3/3) ... [2021-11-12 22:57:26,541 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound5.c [2021-11-12 22:57:26,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:57:26,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:57:26,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:57:26,599 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:57:26,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:57:26,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 22:57:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 22:57:26,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:26,622 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:26,622 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:26,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash 169979374, now seen corresponding path program 1 times [2021-11-12 22:57:26,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:26,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371940845] [2021-11-12 22:57:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:26,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:26,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:57:26,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437931681] [2021-11-12 22:57:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:26,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:57:26,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:57:26,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:57:26,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:57:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:26,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:57:26,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:57:26,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:57:27,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:27,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371940845] [2021-11-12 22:57:27,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:57:27,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437931681] [2021-11-12 22:57:27,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437931681] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:27,166 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:27,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-12 22:57:27,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031336487] [2021-11-12 22:57:27,169 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:27,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:57:27,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:27,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:57:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:57:27,207 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:27,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:27,756 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2021-11-12 22:57:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:57:27,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-12 22:57:27,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:27,770 INFO L225 Difference]: With dead ends: 41 [2021-11-12 22:57:27,770 INFO L226 Difference]: Without dead ends: 24 [2021-11-12 22:57:27,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:57:27,780 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 502.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.77ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 511.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:27,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 53 Invalid, 41 Unknown, 0 Unchecked, 2.77ms Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 511.33ms Time] [2021-11-12 22:57:27,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-12 22:57:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-11-12 22:57:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 22:57:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-12 22:57:27,816 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2021-11-12 22:57:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:27,817 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-12 22:57:27,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-12 22:57:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 22:57:27,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:27,820 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:27,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:28,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-12 22:57:28,041 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:28,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1451058048, now seen corresponding path program 1 times [2021-11-12 22:57:28,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:28,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294356460] [2021-11-12 22:57:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:28,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:28,063 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:57:28,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541213061] [2021-11-12 22:57:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:28,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:57:28,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:57:28,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:57:28,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 22:57:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:57:28,159 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:57:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:57:28,230 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:57:28,230 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:57:28,232 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:57:28,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:28,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:57:28,438 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 22:57:28,441 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:57:28,465 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 22:57:28,470 INFO L158 Benchmark]: Toolchain (without parser) took 2639.40ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 60.4MB in the beginning and 77.3MB in the end (delta: -16.8MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-11-12 22:57:28,470 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 94.4MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:57:28,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.14ms. Allocated memory is still 94.4MB. Free memory was 60.2MB in the beginning and 70.9MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:57:28,472 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.91ms. Allocated memory is still 94.4MB. Free memory was 70.9MB in the beginning and 69.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:57:28,473 INFO L158 Benchmark]: Boogie Preprocessor took 20.30ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 68.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:57:28,473 INFO L158 Benchmark]: RCFGBuilder took 371.99ms. Allocated memory is still 94.4MB. Free memory was 68.3MB in the beginning and 58.2MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:57:28,474 INFO L158 Benchmark]: TraceAbstraction took 1943.57ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 57.8MB in the beginning and 77.3MB in the end (delta: -19.5MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-12 22:57:28,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 94.4MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.14ms. Allocated memory is still 94.4MB. Free memory was 60.2MB in the beginning and 70.9MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.91ms. Allocated memory is still 94.4MB. Free memory was 70.9MB in the beginning and 69.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.30ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 68.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.99ms. Allocated memory is still 94.4MB. Free memory was 68.3MB in the beginning and 58.2MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1943.57ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 57.8MB in the beginning and 77.3MB in the end (delta: -19.5MB). Peak memory consumption was 6.5MB. 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 22:57:28,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF --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 3fabbb4366f4018d2566a269c32a869eae5327dd4c35f2c68a01653f56969989 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:57:30,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:57:30,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:57:31,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:57:31,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:57:31,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:57:31,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:57:31,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:57:31,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:57:31,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:57:31,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:57:31,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:57:31,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:57:31,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:57:31,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:57:31,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:57:31,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:57:31,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:57:31,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:57:31,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:57:31,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:57:31,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:57:31,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:57:31,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:57:31,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:57:31,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:57:31,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:57:31,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:57:31,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:57:31,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:57:31,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:57:31,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:57:31,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:57:31,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:57:31,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:57:31,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:57:31,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:57:31,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:57:31,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:57:31,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:57:31,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:57:31,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:57:31,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:57:31,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:57:31,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:57:31,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:57:31,193 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:57:31,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:57:31,193 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:57:31,193 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:57:31,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:57:31,194 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:57:31,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:57:31,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:57:31,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:57:31,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:57:31,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:57:31,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:57:31,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:57:31,198 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:57:31,198 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:57:31,198 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:57:31,198 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:57:31,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:57:31,199 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:57:31,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:57:31,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:57:31,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:57:31,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:57:31,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:57:31,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:57:31,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:57:31,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:57:31,201 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:57:31,201 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:57:31,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:57:31,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:57:31,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:57:31,202 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fabbb4366f4018d2566a269c32a869eae5327dd4c35f2c68a01653f56969989 [2021-11-12 22:57:31,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:57:31,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:57:31,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:57:31,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:57:31,597 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:57:31,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c [2021-11-12 22:57:31,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data/b3eec8c57/724f0e3212374d9bab6e663d0d20abb7/FLAG0d84783f4 [2021-11-12 22:57:32,149 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:57:32,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c [2021-11-12 22:57:32,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data/b3eec8c57/724f0e3212374d9bab6e663d0d20abb7/FLAG0d84783f4 [2021-11-12 22:57:32,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/data/b3eec8c57/724f0e3212374d9bab6e663d0d20abb7 [2021-11-12 22:57:32,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:57:32,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:57:32,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:57:32,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:57:32,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:57:32,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3636c12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32, skipping insertion in model container [2021-11-12 22:57:32,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:57:32,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:57:32,728 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_7f12d6e9-f950-4a56-9091-0b0a829e26bd/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c[555,568] [2021-11-12 22:57:32,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:57:32,757 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:57:32,770 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_7f12d6e9-f950-4a56-9091-0b0a829e26bd/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c[555,568] [2021-11-12 22:57:32,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:57:32,817 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:57:32,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32 WrapperNode [2021-11-12 22:57:32,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:57:32,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:57:32,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:57:32,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:57:32,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:57:32,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:57:32,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:57:32,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:57:32,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:57:32,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:57:32,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:57:32,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:57:32,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (1/1) ... [2021-11-12 22:57:32,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:57:32,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:57:32,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:57:32,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:57:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:57:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:57:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:57:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:57:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:57:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:57:32,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:57:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:57:33,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:57:33,389 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:57:33,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:33 BoogieIcfgContainer [2021-11-12 22:57:33,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:57:33,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:57:33,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:57:33,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:57:33,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:57:32" (1/3) ... [2021-11-12 22:57:33,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209ebff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:33, skipping insertion in model container [2021-11-12 22:57:33,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:32" (2/3) ... [2021-11-12 22:57:33,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209ebff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:33, skipping insertion in model container [2021-11-12 22:57:33,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:33" (3/3) ... [2021-11-12 22:57:33,401 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound5.c [2021-11-12 22:57:33,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:57:33,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:57:33,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:57:33,500 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:57:33,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:57:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 22:57:33,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 22:57:33,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:33,540 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:33,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:33,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1975646755, now seen corresponding path program 1 times [2021-11-12 22:57:33,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:33,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086668233] [2021-11-12 22:57:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:33,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:33,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:33,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:33,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:57:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:33,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:57:33,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:57:33,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:57:33,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:33,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086668233] [2021-11-12 22:57:33,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086668233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:33,953 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:33,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:57:33,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888895501] [2021-11-12 22:57:33,955 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:33,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:57:33,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:34,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:57:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:57:34,004 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:34,029 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2021-11-12 22:57:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:57:34,032 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-12 22:57:34,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:34,040 INFO L225 Difference]: With dead ends: 47 [2021-11-12 22:57:34,040 INFO L226 Difference]: Without dead ends: 21 [2021-11-12 22:57:34,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:57:34,048 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:34,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:57:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-12 22:57:34,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-12 22:57:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 22:57:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-12 22:57:34,097 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2021-11-12 22:57:34,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:34,098 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-12 22:57:34,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:34,098 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-12 22:57:34,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 22:57:34,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:34,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:34,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:34,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:34,309 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:34,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:34,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1719515233, now seen corresponding path program 1 times [2021-11-12 22:57:34,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:34,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966830407] [2021-11-12 22:57:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:34,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:34,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:34,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:34,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:57:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:34,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:57:34,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:57:34,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 22:57:35,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:35,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966830407] [2021-11-12 22:57:35,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966830407] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:57:35,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:57:35,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-11-12 22:57:35,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420609714] [2021-11-12 22:57:35,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:35,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:57:35,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:35,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:57:35,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:57:35,968 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:38,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:57:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:39,259 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-11-12 22:57:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:57:39,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-12 22:57:39,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:39,282 INFO L225 Difference]: With dead ends: 31 [2021-11-12 22:57:39,282 INFO L226 Difference]: Without dead ends: 29 [2021-11-12 22:57:39,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:57:39,285 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3086.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3167.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:39,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 23 Unknown, 0 Unchecked, 2.55ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 3167.09ms Time] [2021-11-12 22:57:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-12 22:57:39,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-11-12 22:57:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 22:57:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-11-12 22:57:39,296 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2021-11-12 22:57:39,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:39,297 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-11-12 22:57:39,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:39,298 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-11-12 22:57:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 22:57:39,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:39,300 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:39,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:39,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:39,513 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:39,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1670281901, now seen corresponding path program 1 times [2021-11-12 22:57:39,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:39,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783394892] [2021-11-12 22:57:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:39,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:39,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:39,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:39,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:57:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:57:39,657 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:57:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:57:39,791 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 22:57:39,792 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:57:39,793 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:57:39,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:39,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:39,999 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 22:57:40,003 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:57:40,027 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 22:57:40,033 INFO L158 Benchmark]: Toolchain (without parser) took 7487.31ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 37.5MB in the beginning and 47.1MB in the end (delta: -9.6MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2021-11-12 22:57:40,034 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 39.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:57:40,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.29ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 42.4MB in the end (delta: -5.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-12 22:57:40,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.94ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 41.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:57:40,040 INFO L158 Benchmark]: Boogie Preprocessor took 25.67ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 39.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:57:40,040 INFO L158 Benchmark]: RCFGBuilder took 511.63ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 29.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:57:40,041 INFO L158 Benchmark]: TraceAbstraction took 6638.66ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 29.1MB in the beginning and 47.1MB in the end (delta: -18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-12 22:57:40,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 39.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.29ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 42.4MB in the end (delta: -5.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.94ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 41.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.67ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 39.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 511.63ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 29.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6638.66ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 29.1MB in the beginning and 47.1MB in the end (delta: -18.1MB). Peak memory consumption was 16.8MB. 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 22:57:40,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f12d6e9-f950-4a56-9091-0b0a829e26bd/bin/utaipan-vmNK8stdcF/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 Result: ERROR: ExceptionOrErrorResult: NullPointerException: null