./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_del_rec_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_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/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_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/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_f94af36d-ce9a-4046-850f-82418e656b03/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 f1439388ab0e0331a25110b61c93eea2b0d4bab5 .............................................................................................................................................. 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_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/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_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/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_f94af36d-ce9a-4046-850f-82418e656b03/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 f1439388ab0e0331a25110b61c93eea2b0d4bab5 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:49:15,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:49:15,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:49:15,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:49:15,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:49:15,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:49:15,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:49:15,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:49:15,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:49:15,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:49:15,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:49:15,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:49:15,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:49:15,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:49:15,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:49:15,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:49:15,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:49:15,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:49:15,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:49:15,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:49:15,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:49:15,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:49:15,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:49:15,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:49:15,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:49:15,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:49:15,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:49:15,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:49:15,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:49:15,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:49:15,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:49:15,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:49:15,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:49:15,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:49:15,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:49:15,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:49:15,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:49:15,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:49:15,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:49:15,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:49:15,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:49:15,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:49:15,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:49:15,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:49:15,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:49:15,363 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:49:15,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:49:15,363 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:49:15,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:49:15,364 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:49:15,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:49:15,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:49:15,366 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:49:15,366 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:49:15,366 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:49:15,367 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:49:15,367 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:49:15,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:49:15,368 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:49:15,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:49:15,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:49:15,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:49:15,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:49:15,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:49:15,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:49:15,370 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:49:15,370 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:49:15,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:49:15,371 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:49:15,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:49:15,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:49:15,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:49:15,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:49:15,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:49:15,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:49:15,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:49:15,375 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:49:15,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:49:15,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:49:15,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:49:15,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:49:15,377 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_f94af36d-ce9a-4046-850f-82418e656b03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1439388ab0e0331a25110b61c93eea2b0d4bab5 [2021-10-13 06:49:15,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:49:15,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:49:15,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:49:15,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:49:15,773 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:49:15,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2021-10-13 06:49:15,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data/e156a6173/9ae676f70c4a4d98a616dae7f9e30f04/FLAG043b8485d [2021-10-13 06:49:16,539 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:49:16,540 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2021-10-13 06:49:16,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data/e156a6173/9ae676f70c4a4d98a616dae7f9e30f04/FLAG043b8485d [2021-10-13 06:49:16,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data/e156a6173/9ae676f70c4a4d98a616dae7f9e30f04 [2021-10-13 06:49:16,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:49:16,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:49:16,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:49:16,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:49:16,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:49:16,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:16" (1/1) ... [2021-10-13 06:49:16,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e514bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16, skipping insertion in model container [2021-10-13 06:49:16,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:16" (1/1) ... [2021-10-13 06:49:16,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:49:16,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:49:17,143 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_f94af36d-ce9a-4046-850f-82418e656b03/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c[618,631] [2021-10-13 06:49:17,165 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 06:49:17,168 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 06:49:17,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:49:17,213 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 06:49:17,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66dad2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:17, skipping insertion in model container [2021-10-13 06:49:17,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:49:17,215 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 06:49:17,219 INFO L168 Benchmark]: Toolchain (without parser) took 352.60 ms. Allocated memory is still 92.3 MB. Free memory was 51.1 MB in the beginning and 67.8 MB in the end (delta: -16.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:49:17,221 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:49:17,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.57 ms. Allocated memory is still 92.3 MB. Free memory was 71.8 MB in the beginning and 67.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:17,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.57 ms. Allocated memory is still 92.3 MB. Free memory was 71.8 MB in the beginning and 67.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 28]: 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 06:49:20,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:49:20,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:49:20,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:49:20,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:49:20,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:49:20,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:49:20,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:49:20,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:49:20,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:49:20,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:49:20,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:49:20,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:49:20,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:49:20,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:49:20,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:49:20,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:49:20,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:49:20,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:49:20,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:49:20,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:49:20,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:49:20,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:49:20,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:49:20,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:49:20,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:49:20,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:49:20,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:49:20,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:49:20,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:49:20,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:49:20,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:49:20,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:49:20,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:49:20,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:49:20,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:49:20,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:49:20,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:49:20,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:49:20,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:49:20,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:49:20,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:49:20,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:49:20,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:49:20,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:49:20,308 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:49:20,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:49:20,309 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:49:20,309 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:49:20,309 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:49:20,310 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:49:20,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:49:20,313 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:49:20,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:49:20,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:49:20,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:49:20,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:49:20,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:49:20,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:49:20,315 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:49:20,315 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:49:20,315 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:49:20,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:49:20,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:49:20,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:49:20,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:49:20,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:49:20,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:49:20,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:49:20,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:49:20,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:49:20,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:49:20,318 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:49:20,318 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:49:20,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:49:20,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:49:20,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:49:20,319 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_f94af36d-ce9a-4046-850f-82418e656b03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1439388ab0e0331a25110b61c93eea2b0d4bab5 [2021-10-13 06:49:20,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:49:20,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:49:20,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:49:20,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:49:20,815 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:49:20,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2021-10-13 06:49:20,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data/c53b9f4b6/642335538a934653bba3e76e20af9c29/FLAG2600e8185 [2021-10-13 06:49:21,611 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:49:21,612 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2021-10-13 06:49:21,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data/c53b9f4b6/642335538a934653bba3e76e20af9c29/FLAG2600e8185 [2021-10-13 06:49:21,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/data/c53b9f4b6/642335538a934653bba3e76e20af9c29 [2021-10-13 06:49:21,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:49:21,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:49:21,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:49:21,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:49:21,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:49:21,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:21" (1/1) ... [2021-10-13 06:49:21,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55142776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:21, skipping insertion in model container [2021-10-13 06:49:21,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:21" (1/1) ... [2021-10-13 06:49:21,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:49:21,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:49:22,242 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_f94af36d-ce9a-4046-850f-82418e656b03/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c[618,631] [2021-10-13 06:49:22,274 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 06:49:22,279 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 06:49:22,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:49:22,400 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 06:49:22,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:49:22,445 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_f94af36d-ce9a-4046-850f-82418e656b03/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c[618,631] [2021-10-13 06:49:22,467 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 06:49:22,469 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 06:49:22,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:49:22,520 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:49:22,543 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_f94af36d-ce9a-4046-850f-82418e656b03/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c[618,631] [2021-10-13 06:49:22,555 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 06:49:22,559 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 06:49:22,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:49:22,619 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:49:22,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22 WrapperNode [2021-10-13 06:49:22,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:49:22,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:49:22,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:49:22,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:49:22,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:49:22,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:49:22,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:49:22,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:49:22,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:49:22,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:49:22,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:49:22,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:49:22,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (1/1) ... [2021-10-13 06:49:22,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:49:22,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:49:22,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:49:22,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:49:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:49:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 06:49:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:49:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2021-10-13 06:49:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2021-10-13 06:49:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure min [2021-10-13 06:49:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2021-10-13 06:49:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 06:49:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 06:49:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-10-13 06:49:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-10-13 06:49:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 06:49:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure size [2021-10-13 06:49:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2021-10-13 06:49:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:49:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:49:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2021-10-13 06:49:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2021-10-13 06:49:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:49:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 06:49:23,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:49:23,702 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-13 06:49:23,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:49:23 BoogieIcfgContainer [2021-10-13 06:49:23,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:49:23,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:49:23,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:49:23,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:49:23,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:49:21" (1/3) ... [2021-10-13 06:49:23,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca2856e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:49:23, skipping insertion in model container [2021-10-13 06:49:23,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:22" (2/3) ... [2021-10-13 06:49:23,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca2856e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:49:23, skipping insertion in model container [2021-10-13 06:49:23,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:49:23" (3/3) ... [2021-10-13 06:49:23,713 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2021-10-13 06:49:23,718 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:49:23,718 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-13 06:49:23,772 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:49:23,778 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 06:49:23,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 06:49:23,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 55 states have (on average 1.309090909090909) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-13 06:49:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 06:49:23,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:23,809 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-10-13 06:49:23,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-13 06:49:23,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:23,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1095170897, now seen corresponding path program 1 times [2021-10-13 06:49:23,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:49:23,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869339643] [2021-10-13 06:49:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:23,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:49:23,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:49:23,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:49:23,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:49:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:24,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 06:49:24,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:24,241 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 06:49:24,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:24,383 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 06:49:24,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:49:24,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869339643] [2021-10-13 06:49:24,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869339643] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:49:24,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:49:24,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:49:24,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799954508] [2021-10-13 06:49:24,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:49:24,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:49:24,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:49:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:49:24,420 INFO L87 Difference]: Start difference. First operand has 81 states, 55 states have (on average 1.309090909090909) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 06:49:24,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:24,479 INFO L93 Difference]: Finished difference Result 137 states and 174 transitions. [2021-10-13 06:49:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:49:24,480 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2021-10-13 06:49:24,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:24,494 INFO L225 Difference]: With dead ends: 137 [2021-10-13 06:49:24,495 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 06:49:24,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:49:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 06:49:24,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-13 06:49:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.196078431372549) internal successors, (61), 54 states have internal predecessors, (61), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-13 06:49:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-10-13 06:49:24,580 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 30 [2021-10-13 06:49:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:24,583 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-10-13 06:49:24,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 06:49:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-10-13 06:49:24,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 06:49:24,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:24,592 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-10-13 06:49:24,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:24,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:49:24,807 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-13 06:49:24,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:24,813 INFO L82 PathProgramCache]: Analyzing trace with hash -394106319, now seen corresponding path program 1 times [2021-10-13 06:49:24,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:49:24,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458393841] [2021-10-13 06:49:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:24,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:49:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:49:24,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:49:24,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:49:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:24,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 06:49:24,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:25,191 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 06:49:25,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:25,363 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 06:49:25,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:49:25,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458393841] [2021-10-13 06:49:25,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458393841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:49:25,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:49:25,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 06:49:25,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457059234] [2021-10-13 06:49:25,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:49:25,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:49:25,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:49:25,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:49:25,380 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 06:49:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:25,441 INFO L93 Difference]: Finished difference Result 131 states and 160 transitions. [2021-10-13 06:49:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:49:25,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2021-10-13 06:49:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:25,453 INFO L225 Difference]: With dead ends: 131 [2021-10-13 06:49:25,453 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 06:49:25,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:49:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 06:49:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-13 06:49:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 56 states have internal predecessors, (62), 16 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (19), 16 states have call predecessors, (19), 16 states have call successors, (19) [2021-10-13 06:49:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2021-10-13 06:49:25,483 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 30 [2021-10-13 06:49:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:25,484 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2021-10-13 06:49:25,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 06:49:25,485 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2021-10-13 06:49:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 06:49:25,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:25,495 INFO L512 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:49:25,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:25,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:49:25,721 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-13 06:49:25,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:25,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1904559170, now seen corresponding path program 1 times [2021-10-13 06:49:25,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:49:25,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971604155] [2021-10-13 06:49:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:25,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:49:25,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:49:25,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:49:25,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:49:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:25,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 06:49:25,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:49:26,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:49:26,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:49:26,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971604155] [2021-10-13 06:49:26,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971604155] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:49:26,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [466264926] [2021-10-13 06:49:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:26,719 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:49:26,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:49:26,739 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:49:26,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 06:49:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:27,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 06:49:27,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:49:27,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:49:27,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [466264926] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:49:27,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43666738] [2021-10-13 06:49:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:27,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:49:27,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:49:27,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:49:27,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 06:49:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:27,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 06:49:27,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:49:28,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:49:28,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43666738] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:49:28,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:49:28,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 8 [2021-10-13 06:49:28,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368232664] [2021-10-13 06:49:28,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 06:49:28,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:49:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 06:49:28,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:49:28,495 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-13 06:49:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:28,685 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2021-10-13 06:49:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:49:28,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 42 [2021-10-13 06:49:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:28,689 INFO L225 Difference]: With dead ends: 139 [2021-10-13 06:49:28,689 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 06:49:28,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 06:49:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 06:49:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-13 06:49:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 58 states have internal predecessors, (63), 16 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2021-10-13 06:49:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-10-13 06:49:28,704 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 42 [2021-10-13 06:49:28,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:28,704 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-10-13 06:49:28,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-13 06:49:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-10-13 06:49:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 06:49:28,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:28,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:49:28,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:28,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-13 06:49:29,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:29,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:49:29,333 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-13 06:49:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:29,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1838253317, now seen corresponding path program 1 times [2021-10-13 06:49:29,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:49:29,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795790253] [2021-10-13 06:49:29,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:29,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:49:29,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:49:29,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:49:29,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 06:49:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:29,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 06:49:29,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 06:49:29,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 06:49:30,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:49:30,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795790253] [2021-10-13 06:49:30,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795790253] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:49:30,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:49:30,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-10-13 06:49:30,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172201382] [2021-10-13 06:49:30,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 06:49:30,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:49:30,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 06:49:30,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:49:30,238 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-10-13 06:49:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:30,445 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2021-10-13 06:49:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 06:49:30,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 52 [2021-10-13 06:49:30,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:30,453 INFO L225 Difference]: With dead ends: 139 [2021-10-13 06:49:30,454 INFO L226 Difference]: Without dead ends: 82 [2021-10-13 06:49:30,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 06:49:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-13 06:49:30,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-10-13 06:49:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 60 states have internal predecessors, (64), 16 states have call successors, (16), 5 states have call predecessors, (16), 8 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) [2021-10-13 06:49:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2021-10-13 06:49:30,478 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 52 [2021-10-13 06:49:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:30,479 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2021-10-13 06:49:30,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-10-13 06:49:30,481 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2021-10-13 06:49:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 06:49:30,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:30,487 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:49:30,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:30,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:49:30,693 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-13 06:49:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:30,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1543692906, now seen corresponding path program 1 times [2021-10-13 06:49:30,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:49:30,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631065216] [2021-10-13 06:49:30,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:30,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:49:30,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:49:30,696 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:49:30,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 06:49:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:30,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 06:49:31,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-13 06:49:31,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-13 06:49:31,625 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:49:31,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631065216] [2021-10-13 06:49:31,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631065216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:49:31,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:49:31,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-10-13 06:49:31,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925750747] [2021-10-13 06:49:31,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 06:49:31,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:49:31,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 06:49:31,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:49:31,628 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-13 06:49:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:32,289 INFO L93 Difference]: Finished difference Result 134 states and 168 transitions. [2021-10-13 06:49:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 06:49:32,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 65 [2021-10-13 06:49:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:32,293 INFO L225 Difference]: With dead ends: 134 [2021-10-13 06:49:32,293 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 06:49:32,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 06:49:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 06:49:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-13 06:49:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 62 states have internal predecessors, (65), 16 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (25), 16 states have call predecessors, (25), 16 states have call successors, (25) [2021-10-13 06:49:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2021-10-13 06:49:32,307 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 65 [2021-10-13 06:49:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:32,308 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2021-10-13 06:49:32,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-13 06:49:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2021-10-13 06:49:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 06:49:32,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:32,311 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:49:32,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:32,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:49:32,526 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-13 06:49:32,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:32,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1767582969, now seen corresponding path program 1 times [2021-10-13 06:49:32,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:49:32,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435278865] [2021-10-13 06:49:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:32,529 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:49:32,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:49:32,530 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:49:32,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 06:49:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:49:33,132 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:49:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:49:33,728 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 06:49:33,729 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:49:33,730 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:49:33,732 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:49:33,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:49:33,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:49:33,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:33,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:49:33,973 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:49:34,001 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,002 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,002 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,003 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,007 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,008 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,008 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,009 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,009 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,009 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,010 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,010 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:49:34 BoogieIcfgContainer [2021-10-13 06:49:34,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:49:34,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:49:34,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:49:34,089 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:49:34,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:49:23" (3/4) ... [2021-10-13 06:49:34,091 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 06:49:34,097 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,097 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,097 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,097 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,099 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,099 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,099 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,100 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,100 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,100 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,104 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,105 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-13 06:49:34,181 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:49:34,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:49:34,183 INFO L168 Benchmark]: Toolchain (without parser) took 12245.16 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 36.4 MB in the beginning and 38.9 MB in the end (delta: -2.5 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:34,183 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:49:34,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.93 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 36.2 MB in the beginning and 52.7 MB in the end (delta: -16.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:34,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.80 ms. Allocated memory is still 73.4 MB. Free memory was 52.7 MB in the beginning and 50.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:34,185 INFO L168 Benchmark]: Boogie Preprocessor took 80.60 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 48.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:49:34,186 INFO L168 Benchmark]: RCFGBuilder took 919.25 ms. Allocated memory is still 73.4 MB. Free memory was 48.6 MB in the beginning and 52.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:34,186 INFO L168 Benchmark]: TraceAbstraction took 10381.79 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 51.6 MB in the beginning and 45.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:34,187 INFO L168 Benchmark]: Witness Printer took 92.87 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 38.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:34,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 680.93 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 36.2 MB in the beginning and 52.7 MB in the end (delta: -16.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.80 ms. Allocated memory is still 73.4 MB. Free memory was 52.7 MB in the beginning and 50.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.60 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 48.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 919.25 ms. Allocated memory is still 73.4 MB. Free memory was 48.6 MB in the beginning and 52.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10381.79 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 51.6 MB in the beginning and 45.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * Witness Printer took 92.87 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 38.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L98] CALL nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L30] RET, EXPR nondet_tree() VAL [n={1:0}, nondet_tree()={0:0}] [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L31] RET, EXPR nondet_tree() VAL [n={1:0}, nondet_tree()={0:0}] [L31] n->right = nondet_tree() [L32] return n; VAL [\result={1:0}, n={1:0}] [L98] RET nondet_tree() [L76] CALL, EXPR min(t) VAL [n={1:0}] [L37] COND FALSE !(!n) [L40] EXPR n->left VAL [n={1:0}, n={1:0}, n->left={0:0}] [L40] CALL, EXPR min(n->left) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L40] RET, EXPR min(n->left) VAL [min(n->left)=2147483647, n={1:0}, n={1:0}, n->left={0:0}] [L40] int a = min(n->left); [L41] EXPR n->right VAL [a=2147483647, n={1:0}, n={1:0}, n->right={0:0}] [L41] CALL, EXPR min(n->right) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L41] RET, EXPR min(n->right) VAL [a=2147483647, min(n->right)=2147483647, n={1:0}, n={1:0}, n->right={0:0}] [L41] int b = min(n->right); [L42] COND TRUE a <= b [L42] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={1:0}, n={1:0}] [L76] RET, EXPR min(t) [L76] int a = min(t); [L77] int b; [L79] CALL, EXPR size(t) VAL [t={1:0}] [L71] COND FALSE !(!t) [L72] EXPR t->left VAL [t={1:0}, t={1:0}, t->left={0:0}] [L72] CALL, EXPR size(t->left) VAL [t={0:0}] [L71] COND TRUE !t [L71] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L72] RET, EXPR size(t->left) VAL [size(t->left)=0, t={1:0}, t={1:0}, t->left={0:0}] [L72] EXPR t->right VAL [size(t->left)=0, t={1:0}, t={1:0}, t->left={0:0}, t->right={0:0}] [L72] CALL, EXPR size(t->right) VAL [t={0:0}] [L71] COND TRUE !t [L71] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L72] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={1:0}, t={1:0}, t->left={0:0}, t->right={0:0}] [L72] return size(t->left) + size(t->right) + 1; [L79] RET, EXPR size(t) [L79] int n = size(t); [L10] COND FALSE !(!cond) [L81] int *x = calloc(n, sizeof(int)); [L82] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={2:0}, t={1:0}] [L60] COND FALSE !(!t) [L63] EXPR t->left VAL [\old(i)=1, a={2:0}, a={2:0}, i=1, t={1:0}, t={1:0}, t->left={0:0}] [L63] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={2:0}, t={0:0}] [L60] COND TRUE !t [L61] return i; VAL [\old(i)=1, \result=1, a={2:0}, a={2:0}, i=1, t={0:0}, t={0:0}] [L63] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={2:0}, a={2:0}, i=1, t={1:0}, t={1:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L63] i = tree_inorder(t->left, a, i) [L64] EXPR i++ [L64] EXPR t->data [L64] a[i++] = t->data [L65] EXPR t->right VAL [\old(i)=1, a={2:0}, a={2:0}, i=2, t={1:0}, t={1:0}, t->right={0:0}] [L65] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={2:0}, t={0:0}] [L60] COND TRUE !t [L61] return i; VAL [\old(i)=2, \result=2, a={2:0}, a={2:0}, i=2, t={0:0}, t={0:0}] [L65] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={2:0}, a={2:0}, i=2, t={1:0}, t={1:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L65] i = tree_inorder(t->right, a, i) [L66] return i; VAL [\old(i)=1, \result=2, a={2:0}, a={2:0}, i=2, t={1:0}, t={1:0}] [L82] RET tree_inorder(t, x, n) [L83] x[0] [L16] COND TRUE !cond [L16] reach_error() - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 81 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 10201.0ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 39.0ms, AutomataDifference: 1272.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 450 SDtfs, 153 SDslu, 1371 SDs, 0 SdLazy, 203 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 807.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 603 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 349.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=5, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 138.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 208.3ms SsaConstructionTime, 819.2ms SatisfiabilityAnalysisTime, 3970.0ms InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 592 ConstructedInterpolants, 0 QuantifiedInterpolants, 1347 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1063 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 168/180 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 06:49:34,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94af36d-ce9a-4046-850f-82418e656b03/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...