./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8 --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 fdb95a531f91b891105aa672579f7a5a4ed687cf ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8 --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 fdb95a531f91b891105aa672579f7a5a4ed687cf ................................................................................................................................................................................................................................................................................................................................................................................................................. 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-4e77c04 [2021-10-13 08:15:55,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:15:55,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:15:55,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:15:55,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:15:55,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:15:55,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:15:55,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:15:55,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:15:55,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:15:55,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:15:55,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:15:55,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:15:55,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:15:55,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:15:55,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:15:55,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:15:55,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:15:55,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:15:55,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:15:55,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:15:55,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:15:55,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:15:55,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:15:55,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:15:55,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:15:55,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:15:55,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:15:55,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:15:55,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:15:55,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:15:55,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:15:55,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:15:55,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:15:55,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:15:55,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:15:55,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:15:55,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:15:55,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:15:55,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:15:55,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:15:55,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:15:55,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:15:55,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:15:55,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:15:55,375 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:15:55,375 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:15:55,376 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:15:55,376 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:15:55,376 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:15:55,376 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:15:55,377 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:15:55,378 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:15:55,379 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:15:55,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:15:55,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:15:55,379 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:15:55,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:15:55,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:15:55,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:15:55,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:15:55,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:15:55,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:15:55,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:15:55,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:15:55,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:15:55,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:15:55,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:15:55,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:15:55,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:15:55,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:15:55,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:15:55,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:15:55,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:15:55,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:15:55,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:15:55,388 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:15:55,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:15:55,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:15:55,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:15:55,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:15:55,390 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_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdb95a531f91b891105aa672579f7a5a4ed687cf [2021-10-13 08:15:55,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:15:55,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:15:55,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:15:55,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:15:55,802 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:15:55,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/verifythis/tree_max_incorrect.c [2021-10-13 08:15:55,895 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data/8bbaf05a2/9af2a01185394e589d14758dc0aa8ee5/FLAGbf0713ac1 [2021-10-13 08:15:56,580 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:15:56,581 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/sv-benchmarks/c/verifythis/tree_max_incorrect.c [2021-10-13 08:15:56,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data/8bbaf05a2/9af2a01185394e589d14758dc0aa8ee5/FLAGbf0713ac1 [2021-10-13 08:15:56,907 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data/8bbaf05a2/9af2a01185394e589d14758dc0aa8ee5 [2021-10-13 08:15:56,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:15:56,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:15:56,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:15:56,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:15:56,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:15:56,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:56" (1/1) ... [2021-10-13 08:15:56,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb65551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:56, skipping insertion in model container [2021-10-13 08:15:56,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:56" (1/1) ... [2021-10-13 08:15:56,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:15:56,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:15:57,197 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_917d7652-39d7-43b2-b55b-dd24fe82b3b8/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2021-10-13 08:15:57,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:15:57,235 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 08:15:57,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a455f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:57, skipping insertion in model container [2021-10-13 08:15:57,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:15:57,237 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 08:15:57,240 INFO L168 Benchmark]: Toolchain (without parser) took 323.59 ms. Allocated memory is still 92.3 MB. Free memory was 50.8 MB in the beginning and 68.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:57,241 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory is still 67.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:15:57,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.19 ms. Allocated memory is still 92.3 MB. Free memory was 50.6 MB in the beginning and 68.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:57,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory is still 67.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.19 ms. Allocated memory is still 92.3 MB. Free memory was 50.6 MB in the beginning and 68.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 23]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:16:00,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:16:00,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:16:00,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:16:00,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:16:00,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:16:00,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:16:00,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:16:00,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:16:00,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:16:00,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:16:00,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:16:00,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:16:00,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:16:00,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:16:00,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:16:00,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:16:00,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:16:00,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:16:00,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:16:00,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:16:00,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:16:00,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:16:00,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:16:00,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:16:00,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:16:00,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:16:00,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:16:00,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:16:00,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:16:00,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:16:00,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:16:00,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:16:00,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:16:00,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:16:00,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:16:00,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:16:00,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:16:00,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:16:00,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:16:00,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:16:00,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:16:00,354 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:16:00,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:16:00,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:16:00,356 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:16:00,356 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:16:00,356 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:16:00,357 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:16:00,357 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:16:00,357 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:16:00,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:16:00,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:16:00,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:16:00,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:16:00,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:16:00,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:16:00,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:16:00,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:16:00,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:16:00,364 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:16:00,364 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:16:00,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:16:00,365 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:16:00,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:16:00,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:16:00,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:16:00,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:16:00,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:16:00,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:16:00,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:16:00,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:16:00,369 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:16:00,369 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:16:00,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:16:00,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:16:00,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:16:00,371 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_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdb95a531f91b891105aa672579f7a5a4ed687cf [2021-10-13 08:16:00,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:16:00,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:16:00,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:16:00,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:16:00,899 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:16:00,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/verifythis/tree_max_incorrect.c [2021-10-13 08:16:00,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data/6cce9a181/cabe40462b2641f49e7726dceed5dcfe/FLAGa9accc81b [2021-10-13 08:16:01,764 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:16:01,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/sv-benchmarks/c/verifythis/tree_max_incorrect.c [2021-10-13 08:16:01,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data/6cce9a181/cabe40462b2641f49e7726dceed5dcfe/FLAGa9accc81b [2021-10-13 08:16:02,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/data/6cce9a181/cabe40462b2641f49e7726dceed5dcfe [2021-10-13 08:16:02,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:16:02,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:16:02,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:16:02,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:16:02,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:16:02,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7d96f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02, skipping insertion in model container [2021-10-13 08:16:02,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:16:02,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:16:02,325 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_917d7652-39d7-43b2-b55b-dd24fe82b3b8/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2021-10-13 08:16:02,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:16:02,398 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 08:16:02,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:16:02,432 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_917d7652-39d7-43b2-b55b-dd24fe82b3b8/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2021-10-13 08:16:02,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:16:02,449 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:16:02,465 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_917d7652-39d7-43b2-b55b-dd24fe82b3b8/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2021-10-13 08:16:02,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:16:02,497 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:16:02,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02 WrapperNode [2021-10-13 08:16:02,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:16:02,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:16:02,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:16:02,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:16:02,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:16:02,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:16:02,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:16:02,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:16:02,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:16:02,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:16:02,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:16:02,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:16:02,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (1/1) ... [2021-10-13 08:16:02,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:16:02,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:16:02,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:16:02,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:16:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:16:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-10-13 08:16:02,733 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-10-13 08:16:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-10-13 08:16:02,733 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-10-13 08:16:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:16:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-10-13 08:16:02,734 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-10-13 08:16:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:16:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:16:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:16:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 08:16:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:16:02,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:16:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 08:16:03,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:16:03,259 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 08:16:03,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:16:03 BoogieIcfgContainer [2021-10-13 08:16:03,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:16:03,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:16:03,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:16:03,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:16:03,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:16:02" (1/3) ... [2021-10-13 08:16:03,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284dc0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:16:03, skipping insertion in model container [2021-10-13 08:16:03,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:02" (2/3) ... [2021-10-13 08:16:03,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284dc0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:16:03, skipping insertion in model container [2021-10-13 08:16:03,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:16:03" (3/3) ... [2021-10-13 08:16:03,272 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max_incorrect.c [2021-10-13 08:16:03,279 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:16:03,279 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:16:03,341 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:16:03,349 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:16:03,350 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:16:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 08:16:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:16:03,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:03,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:03,381 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:16:03,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:03,388 INFO L82 PathProgramCache]: Analyzing trace with hash -891537794, now seen corresponding path program 1 times [2021-10-13 08:16:03,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:03,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469198639] [2021-10-13 08:16:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:03,410 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:03,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:03,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:03,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:16:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:03,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:16:03,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:04,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:04,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:04,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469198639] [2021-10-13 08:16:04,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469198639] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:04,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:04,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-13 08:16:04,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757672128] [2021-10-13 08:16:04,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:16:04,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:04,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:16:04,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:16:04,394 INFO L87 Difference]: Start difference. First operand has 40 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 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), 2 states have call successors, (2) [2021-10-13 08:16:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:04,542 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2021-10-13 08:16:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:16:04,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 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), 2 states have call successors, (2) Word has length 18 [2021-10-13 08:16:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:04,562 INFO L225 Difference]: With dead ends: 73 [2021-10-13 08:16:04,563 INFO L226 Difference]: Without dead ends: 34 [2021-10-13 08:16:04,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:16:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-13 08:16:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-13 08:16:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 24 states have internal predecessors, (26), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-10-13 08:16:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2021-10-13 08:16:04,632 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 18 [2021-10-13 08:16:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:04,633 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2021-10-13 08:16:04,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 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), 2 states have call successors, (2) [2021-10-13 08:16:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2021-10-13 08:16:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 08:16:04,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:04,638 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:04,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:04,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:04,853 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:16:04,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:04,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1509693249, now seen corresponding path program 1 times [2021-10-13 08:16:04,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:04,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061671345] [2021-10-13 08:16:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:04,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:04,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:04,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:04,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:16:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:04,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:16:05,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 08:16:05,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 08:16:05,458 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:05,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061671345] [2021-10-13 08:16:05,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061671345] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:05,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:05,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-10-13 08:16:05,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263986547] [2021-10-13 08:16:05,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 08:16:05,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 08:16:05,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:16:05,472 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 08:16:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:05,671 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2021-10-13 08:16:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:16:05,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2021-10-13 08:16:05,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:05,674 INFO L225 Difference]: With dead ends: 47 [2021-10-13 08:16:05,674 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 08:16:05,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:16:05,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 08:16:05,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-13 08:16:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-13 08:16:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2021-10-13 08:16:05,703 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 28 [2021-10-13 08:16:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:05,704 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-10-13 08:16:05,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 08:16:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2021-10-13 08:16:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 08:16:05,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:05,707 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:05,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:05,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:05,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:16:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:05,923 INFO L82 PathProgramCache]: Analyzing trace with hash -896236761, now seen corresponding path program 1 times [2021-10-13 08:16:05,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:05,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924637757] [2021-10-13 08:16:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:05,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:05,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:05,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:05,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:16:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:16:06,147 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:16:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:16:06,344 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 08:16:06,345 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:16:06,346 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location checkErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:16:06,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 08:16:06,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:06,567 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:16:06,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:16:06 BoogieIcfgContainer [2021-10-13 08:16:06,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:16:06,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:16:06,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:16:06,642 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:16:06,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:16:03" (3/4) ... [2021-10-13 08:16:06,645 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 08:16:06,738 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:16:06,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:16:06,740 INFO L168 Benchmark]: Toolchain (without parser) took 4633.45 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.6 MB in the beginning and 51.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:16:06,741 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:16:06,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.22 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 39.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:16:06,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.75 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 38.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:16:06,743 INFO L168 Benchmark]: Boogie Preprocessor took 59.47 ms. Allocated memory is still 58.7 MB. Free memory was 38.1 MB in the beginning and 36.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:16:06,744 INFO L168 Benchmark]: RCFGBuilder took 653.79 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.6 MB in the beginning and 52.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:16:06,744 INFO L168 Benchmark]: TraceAbstraction took 3376.35 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 30.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:16:06,758 INFO L168 Benchmark]: Witness Printer took 96.92 ms. Allocated memory is still 71.3 MB. Free memory was 30.1 MB in the beginning and 51.8 MB in the end (delta: -21.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:16:06,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 387.22 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 39.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.75 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 38.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.47 ms. Allocated memory is still 58.7 MB. Free memory was 38.1 MB in the beginning and 36.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 653.79 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.6 MB in the beginning and 52.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3376.35 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 30.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * Witness Printer took 96.92 ms. Allocated memory is still 71.3 MB. Free memory was 30.1 MB in the beginning and 51.8 MB in the end (delta: -21.7 MB). Peak memory consumption was 4.2 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: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L60] CALL nondet_tree() [L20] COND FALSE !(__VERIFIER_nondet_bool()) [L23] struct node *n = (struct node *)malloc(sizeof(struct node)); [L24] n->data = __VERIFIER_nondet_int() [L25] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L25] RET, EXPR nondet_tree() VAL [n={1:0}, nondet_tree()={0:0}] [L25] n->left = nondet_tree() [L26] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L26] RET, EXPR nondet_tree() VAL [n={1:0}, nondet_tree()={0:0}] [L26] n->right = nondet_tree() [L27] return n; VAL [\result={1:0}, n={1:0}] [L60] RET nondet_tree() [L55] CALL, EXPR max(n) VAL [n={1:0}] [L32] COND FALSE !(!n) [L35] EXPR n->left VAL [n={1:0}, n={1:0}, n->left={0:0}] [L35] CALL, EXPR max(n->left) VAL [n={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L35] RET, EXPR max(n->left) VAL [max(n->left)=-2147483648, n={1:0}, n={1:0}, n->left={0:0}] [L35] int a = max(n->left); [L36] EXPR n->right VAL [a=2147483648, n={1:0}, n={1:0}, n->right={0:0}] [L36] CALL, EXPR max(n->right) VAL [n={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L36] RET, EXPR max(n->right) VAL [a=2147483648, max(n->right)=-2147483648, n={1:0}, n={1:0}, n->right={0:0}] [L36] int b = max(n->right); [L37] COND TRUE a >= b [L37] return a; VAL [\result=-2147483648, a=2147483648, b=2147483648, n={1:0}, n={1:0}] [L55] RET, EXPR max(n) [L55] int a = max(n); [L56] CALL check(n, a) [L43] COND TRUE \read(*n) [L44] n->data [L11] COND TRUE !cond [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3226.4ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 19.6ms, AutomataDifference: 401.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 82 SDtfs, 32 SDslu, 375 SDs, 0 SdLazy, 89 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 165.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 248.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 72.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 79.6ms SsaConstructionTime, 205.6ms SatisfiabilityAnalysisTime, 1220.9ms InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 249 SizeOfPredicates, 10 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 18/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 08:16:06,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_917d7652-39d7-43b2-b55b-dd24fe82b3b8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...