./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ncompf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ncompf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE --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 9828ae97bd89bb8bc9e03b825846d0b3720f0cca297df36eda8ff823667b1534 ................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:18:05,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:18:05,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:18:06,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:18:06,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:18:06,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:18:06,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:18:06,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:18:06,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:18:06,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:18:06,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:18:06,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:18:06,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:18:06,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:18:06,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:18:06,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:18:06,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:18:06,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:18:06,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:18:06,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:18:06,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:18:06,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:18:06,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:18:06,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:18:06,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:18:06,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:18:06,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:18:06,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:18:06,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:18:06,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:18:06,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:18:06,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:18:06,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:18:06,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:18:06,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:18:06,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:18:06,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:18:06,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:18:06,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:18:06,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:18:06,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:18:06,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:18:06,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:18:06,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:18:06,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:18:06,176 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:18:06,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:18:06,176 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:18:06,177 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:18:06,177 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:18:06,177 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:18:06,177 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:18:06,178 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:18:06,179 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:18:06,179 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:18:06,179 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:18:06,179 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:18:06,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:18:06,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:18:06,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:18:06,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:18:06,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:18:06,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:18:06,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:18:06,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:18:06,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:18:06,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:18:06,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:18:06,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:18:06,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:18:06,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:18:06,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:18:06,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:18:06,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:18:06,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:18:06,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:18:06,186 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:18:06,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:18:06,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:18:06,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:18:06,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:18:06,187 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_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9828ae97bd89bb8bc9e03b825846d0b3720f0cca297df36eda8ff823667b1534 [2021-10-24 10:18:06,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:18:06,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:18:06,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:18:06,512 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:18:06,513 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:18:06,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/array-fpi/ncompf.c [2021-10-24 10:18:06,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/data/12c246f7c/cbc56014dc1b4c428c8e51469f223730/FLAG75d237f2c [2021-10-24 10:18:07,105 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:18:07,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/sv-benchmarks/c/array-fpi/ncompf.c [2021-10-24 10:18:07,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/data/12c246f7c/cbc56014dc1b4c428c8e51469f223730/FLAG75d237f2c [2021-10-24 10:18:07,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/data/12c246f7c/cbc56014dc1b4c428c8e51469f223730 [2021-10-24 10:18:07,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:18:07,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:18:07,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:18:07,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:18:07,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:18:07,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce4d52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07, skipping insertion in model container [2021-10-24 10:18:07,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:18:07,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:18:07,658 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_15ffa201-6659-4732-ad89-5a09db1b5eed/sv-benchmarks/c/array-fpi/ncompf.c[589,602] [2021-10-24 10:18:07,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:18:07,688 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:18:07,702 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_15ffa201-6659-4732-ad89-5a09db1b5eed/sv-benchmarks/c/array-fpi/ncompf.c[589,602] [2021-10-24 10:18:07,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:18:07,728 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:18:07,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07 WrapperNode [2021-10-24 10:18:07,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:18:07,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:18:07,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:18:07,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:18:07,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:18:07,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:18:07,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:18:07,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:18:07,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:18:07,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:18:07,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:18:07,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:18:07,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (1/1) ... [2021-10-24 10:18:07,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:18:07,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:18:07,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:18:07,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:18:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:18:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:18:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:18:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:18:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:18:07,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:18:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:18:08,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:18:08,466 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-24 10:18:08,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:18:08 BoogieIcfgContainer [2021-10-24 10:18:08,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:18:08,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:18:08,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:18:08,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:18:08,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:18:07" (1/3) ... [2021-10-24 10:18:08,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73369b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:18:08, skipping insertion in model container [2021-10-24 10:18:08,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:07" (2/3) ... [2021-10-24 10:18:08,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73369b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:18:08, skipping insertion in model container [2021-10-24 10:18:08,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:18:08" (3/3) ... [2021-10-24 10:18:08,481 INFO L111 eAbstractionObserver]: Analyzing ICFG ncompf.c [2021-10-24 10:18:08,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:18:08,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:18:08,555 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:18:08,565 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 [2021-10-24 10:18:08,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:18:08,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:18:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:18:08,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:18:08,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:18:08,597 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:18:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:18:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1654620546, now seen corresponding path program 1 times [2021-10-24 10:18:08,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:18:08,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886947756] [2021-10-24 10:18:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:18:08,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:18:08,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:18:08,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836672706] [2021-10-24 10:18:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:18:08,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:18:08,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:18:08,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:18:08,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:18:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:18:08,834 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:18:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:18:08,916 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:18:08,919 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:18:08,920 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:18:08,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:18:09,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 10:18:09,157 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:18:09,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:18:09 BoogieIcfgContainer [2021-10-24 10:18:09,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:18:09,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:18:09,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:18:09,204 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:18:09,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:18:08" (3/4) ... [2021-10-24 10:18:09,206 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:18:09,253 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ffa201-6659-4732-ad89-5a09db1b5eed/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:18:09,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:18:09,256 INFO L168 Benchmark]: Toolchain (without parser) took 1805.18 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 63.1 MB in the beginning and 92.2 MB in the end (delta: -29.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:18:09,256 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 67.5 MB in the beginning and 67.5 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:18:09,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.15 ms. Allocated memory is still 98.6 MB. Free memory was 62.9 MB in the beginning and 72.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:18:09,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 71.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:18:09,258 INFO L168 Benchmark]: Boogie Preprocessor took 29.06 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 69.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:18:09,265 INFO L168 Benchmark]: RCFGBuilder took 666.51 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 54.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:18:09,265 INFO L168 Benchmark]: TraceAbstraction took 732.30 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 54.2 MB in the beginning and 94.3 MB in the end (delta: -40.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:18:09,266 INFO L168 Benchmark]: Witness Printer took 49.86 ms. Allocated memory is still 119.5 MB. Free memory was 94.3 MB in the beginning and 92.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:18:09,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 67.5 MB in the beginning and 67.5 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.15 ms. Allocated memory is still 98.6 MB. Free memory was 62.9 MB in the beginning and 72.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 71.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.06 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 69.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 666.51 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 54.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 732.30 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 54.2 MB in the beginning and 94.3 MB in the end (delta: -40.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * Witness Printer took 49.86 ms. Allocated memory is still 119.5 MB. Free memory was 94.3 MB in the beginning and 92.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L35] i=1 VAL [N=1] [L35] COND FALSE !(i