./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c -s /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a15135be85f1667031698ec5147a101594d0ac7b ........................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c -s /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a15135be85f1667031698ec5147a101594d0ac7b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 11:20:52,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:20:52,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:20:52,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:20:52,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:20:52,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:20:52,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:20:52,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:20:52,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:20:52,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:20:52,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:20:52,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:20:52,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:20:52,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:20:52,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:20:52,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:20:52,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:20:52,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:20:52,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:20:52,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:20:52,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:20:52,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:20:52,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:20:52,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:20:52,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:20:52,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:20:52,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:20:52,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:20:52,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:20:52,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:20:52,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:20:52,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:20:52,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:20:52,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:20:52,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:20:52,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:20:52,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:20:52,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:20:52,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:20:52,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:20:52,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:20:52,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 11:20:52,553 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:20:52,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:20:52,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:20:52,554 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:20:52,554 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:20:52,554 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:20:52,554 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 11:20:52,554 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:20:52,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:20:52,554 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 11:20:52,555 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 11:20:52,555 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:20:52,555 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 11:20:52,555 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 11:20:52,555 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 11:20:52,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:20:52,556 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:20:52,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:20:52,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:20:52,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:20:52,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:20:52,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:20:52,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:20:52,556 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:20:52,557 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:20:52,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:20:52,557 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:20:52,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:20:52,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:20:52,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:20:52,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:20:52,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:20:52,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:20:52,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:20:52,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:20:52,558 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 11:20:52,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:20:52,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:20:52,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:20:52,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:20:52,559 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan 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(__VERIFIER_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 -> a15135be85f1667031698ec5147a101594d0ac7b [2019-12-07 11:20:52,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:20:52,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:20:52,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:20:52,669 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:20:52,670 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:20:52,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2019-12-07 11:20:52,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data/b95be1fd7/a2e7904f8f3045d69d1cf61ffe00b4c6/FLAGf91891e62 [2019-12-07 11:20:53,188 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:20:53,189 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2019-12-07 11:20:53,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data/b95be1fd7/a2e7904f8f3045d69d1cf61ffe00b4c6/FLAGf91891e62 [2019-12-07 11:20:53,201 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data/b95be1fd7/a2e7904f8f3045d69d1cf61ffe00b4c6 [2019-12-07 11:20:53,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:20:53,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:20:53,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:20:53,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:20:53,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:20:53,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:20:53" (1/1) ... [2019-12-07 11:20:53,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d89530c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:53, skipping insertion in model container [2019-12-07 11:20:53,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:20:53" (1/1) ... [2019-12-07 11:20:53,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:20:53,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:20:53,391 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 11:20:53,393 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 11:20:53,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:20:53,417 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) [2019-12-07 11:20:53,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49edfd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:53, skipping insertion in model container [2019-12-07 11:20:53,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:20:53,418 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 11:20:53,420 INFO L168 Benchmark]: Toolchain (without parser) took 215.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 82.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -133.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:20:53,420 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:20:53,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 82.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -133.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:20:53,423 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 213.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 82.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -133.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 23]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 11:20:54,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:20:54,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:20:54,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:20:54,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:20:54,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:20:54,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:20:54,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:20:54,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:20:54,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:20:54,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:20:54,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:20:54,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:20:54,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:20:54,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:20:54,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:20:54,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:20:54,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:20:54,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:20:54,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:20:54,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:20:54,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:20:54,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:20:54,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:20:54,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:20:54,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:20:54,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:20:54,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:20:54,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:20:54,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:20:54,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:20:54,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:20:54,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:20:54,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:20:54,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:20:54,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:20:54,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:20:54,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:20:54,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:20:54,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:20:54,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:20:54,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 11:20:54,553 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:20:54,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:20:54,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:20:54,554 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:20:54,554 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:20:54,554 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:20:54,554 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:20:54,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:20:54,554 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:20:54,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:20:54,555 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:20:54,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:20:54,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:20:54,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:20:54,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:20:54,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:20:54,556 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:20:54,556 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 11:20:54,556 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 11:20:54,556 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:20:54,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:20:54,556 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:20:54,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:20:54,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:20:54,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:20:54,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:20:54,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:20:54,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:20:54,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:20:54,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:20:54,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:20:54,558 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 11:20:54,558 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 11:20:54,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:20:54,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:20:54,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:20:54,558 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan 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(__VERIFIER_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 -> a15135be85f1667031698ec5147a101594d0ac7b [2019-12-07 11:20:54,723 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:20:54,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:20:54,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:20:54,736 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:20:54,736 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:20:54,737 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2019-12-07 11:20:54,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data/9931c9ed5/c106fe19d1604d35af373cc329da5082/FLAGf0354718e [2019-12-07 11:20:55,160 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:20:55,160 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2019-12-07 11:20:55,165 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data/9931c9ed5/c106fe19d1604d35af373cc329da5082/FLAGf0354718e [2019-12-07 11:20:55,561 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/data/9931c9ed5/c106fe19d1604d35af373cc329da5082 [2019-12-07 11:20:55,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:20:55,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:20:55,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:20:55,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:20:55,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:20:55,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e05d898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55, skipping insertion in model container [2019-12-07 11:20:55,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:20:55,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:20:55,698 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 11:20:55,699 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 11:20:55,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:20:55,723 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 11:20:55,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:20:55,731 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 11:20:55,732 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 11:20:55,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:20:55,745 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:20:55,785 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 11:20:55,786 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 11:20:55,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:20:55,809 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:20:55,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55 WrapperNode [2019-12-07 11:20:55,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:20:55,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:20:55,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:20:55,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:20:55,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:20:55,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:20:55,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:20:55,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:20:55,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... [2019-12-07 11:20:55,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:20:55,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:20:55,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:20:55,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:20:55,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:20:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:20:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 11:20:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2019-12-07 11:20:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2019-12-07 11:20:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure min [2019-12-07 11:20:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2019-12-07 11:20:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 11:20:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 11:20:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2019-12-07 11:20:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2019-12-07 11:20:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 11:20:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure size [2019-12-07 11:20:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2019-12-07 11:20:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:20:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:20:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2019-12-07 11:20:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2019-12-07 11:20:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:20:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 11:20:56,251 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:20:56,251 INFO L287 CfgBuilder]: Removed 19 assume(true) statements. [2019-12-07 11:20:56,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:20:56 BoogieIcfgContainer [2019-12-07 11:20:56,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:20:56,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:20:56,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:20:56,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:20:56,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:20:55" (1/3) ... [2019-12-07 11:20:56,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609e7743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:20:56, skipping insertion in model container [2019-12-07 11:20:56,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:20:55" (2/3) ... [2019-12-07 11:20:56,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609e7743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:20:56, skipping insertion in model container [2019-12-07 11:20:56,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:20:56" (3/3) ... [2019-12-07 11:20:56,257 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2019-12-07 11:20:56,263 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:20:56,267 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 11:20:56,275 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 11:20:56,289 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:20:56,289 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:20:56,289 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:20:56,290 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:20:56,290 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:20:56,290 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:20:56,290 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:20:56,290 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:20:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2019-12-07 11:20:56,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 11:20:56,307 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:20:56,307 INFO L410 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] [2019-12-07 11:20:56,308 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:20:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:20:56,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1650636720, now seen corresponding path program 1 times [2019-12-07 11:20:56,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 11:20:56,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961685009] [2019-12-07 11:20:56,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 11:20:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:20:56,392 INFO L264 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:20:56,397 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:20:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:20:56,425 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:20:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:20:56,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961685009] [2019-12-07 11:20:56,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:20:56,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 11:20:56,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635770075] [2019-12-07 11:20:56,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:20:56,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 11:20:56,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:20:56,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:20:56,466 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 4 states. [2019-12-07 11:20:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:20:56,498 INFO L93 Difference]: Finished difference Result 137 states and 176 transitions. [2019-12-07 11:20:56,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:20:56,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-12-07 11:20:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:20:56,507 INFO L225 Difference]: With dead ends: 137 [2019-12-07 11:20:56,508 INFO L226 Difference]: Without dead ends: 76 [2019-12-07 11:20:56,510 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:20:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-12-07 11:20:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-12-07 11:20:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 11:20:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2019-12-07 11:20:56,545 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 28 [2019-12-07 11:20:56,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:20:56,545 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2019-12-07 11:20:56,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:20:56,546 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2019-12-07 11:20:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 11:20:56,548 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:20:56,548 INFO L410 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] [2019-12-07 11:20:56,749 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 11:20:56,749 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:20:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:20:56,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1726296733, now seen corresponding path program 1 times [2019-12-07 11:20:56,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 11:20:56,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449645656] [2019-12-07 11:20:56,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 11:20:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:20:56,859 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 11:20:56,862 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:20:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 11:20:56,924 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:20:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 11:20:57,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449645656] [2019-12-07 11:20:57,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1001233565] [2019-12-07 11:20:57,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 11:20:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:20:57,177 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 11:20:57,179 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:20:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 11:20:57,188 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:20:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 11:20:57,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551325167] [2019-12-07 11:20:57,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:20:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:20:57,356 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 11:20:57,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:20:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 11:20:57,367 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:20:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 11:20:57,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 11:20:57,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 8 [2019-12-07 11:20:57,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365382726] [2019-12-07 11:20:57,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 11:20:57,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 11:20:57,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 11:20:57,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-07 11:20:57,449 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 8 states. [2019-12-07 11:20:57,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:20:57,572 INFO L93 Difference]: Finished difference Result 135 states and 169 transitions. [2019-12-07 11:20:57,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 11:20:57,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2019-12-07 11:20:57,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:20:57,574 INFO L225 Difference]: With dead ends: 135 [2019-12-07 11:20:57,574 INFO L226 Difference]: Without dead ends: 78 [2019-12-07 11:20:57,576 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-12-07 11:20:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-12-07 11:20:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-12-07 11:20:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-12-07 11:20:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2019-12-07 11:20:57,585 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 40 [2019-12-07 11:20:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:20:57,585 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2019-12-07 11:20:57,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 11:20:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2019-12-07 11:20:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 11:20:57,587 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:20:57,587 INFO L410 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] [2019-12-07 11:20:58,189 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:20:58,189 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:20:58,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:20:58,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1468417888, now seen corresponding path program 1 times [2019-12-07 11:20:58,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 11:20:58,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770915187] [2019-12-07 11:20:58,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 11:20:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:20:58,255 INFO L264 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 11:20:58,257 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:20:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-12-07 11:20:58,288 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:20:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-12-07 11:20:58,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770915187] [2019-12-07 11:20:58,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:20:58,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-12-07 11:20:58,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314658249] [2019-12-07 11:20:58,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 11:20:58,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 11:20:58,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 11:20:58,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:20:58,364 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand 9 states. [2019-12-07 11:20:58,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:20:58,489 INFO L93 Difference]: Finished difference Result 135 states and 169 transitions. [2019-12-07 11:20:58,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 11:20:58,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2019-12-07 11:20:58,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:20:58,491 INFO L225 Difference]: With dead ends: 135 [2019-12-07 11:20:58,491 INFO L226 Difference]: Without dead ends: 80 [2019-12-07 11:20:58,492 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-12-07 11:20:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-12-07 11:20:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2019-12-07 11:20:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-12-07 11:20:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2019-12-07 11:20:58,500 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2019-12-07 11:20:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:20:58,501 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2019-12-07 11:20:58,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 11:20:58,501 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2019-12-07 11:20:58,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 11:20:58,503 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:20:58,503 INFO L410 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] [2019-12-07 11:20:58,703 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 11:20:58,704 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:20:58,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:20:58,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1054248701, now seen corresponding path program 1 times [2019-12-07 11:20:58,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 11:20:58,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458779594] [2019-12-07 11:20:58,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 11:20:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:20:58,847 INFO L264 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 11:20:58,850 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:20:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-12-07 11:20:58,883 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:20:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-12-07 11:20:58,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458779594] [2019-12-07 11:20:58,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:20:58,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-12-07 11:20:58,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226701988] [2019-12-07 11:20:58,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 11:20:58,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 11:20:58,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 11:20:58,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:20:58,956 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand 9 states. [2019-12-07 11:20:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:20:59,198 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2019-12-07 11:20:59,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 11:20:59,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2019-12-07 11:20:59,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:20:59,201 INFO L225 Difference]: With dead ends: 132 [2019-12-07 11:20:59,201 INFO L226 Difference]: Without dead ends: 82 [2019-12-07 11:20:59,202 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-12-07 11:20:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-12-07 11:20:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-12-07 11:20:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-07 11:20:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2019-12-07 11:20:59,213 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 63 [2019-12-07 11:20:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:20:59,213 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2019-12-07 11:20:59,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 11:20:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2019-12-07 11:20:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-07 11:20:59,216 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:20:59,216 INFO L410 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] [2019-12-07 11:20:59,416 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 11:20:59,418 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:20:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:20:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash -744257626, now seen corresponding path program 1 times [2019-12-07 11:20:59,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 11:20:59,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618069559] [2019-12-07 11:20:59,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 11:20:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:20:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:20:59,884 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 11:20:59,884 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:21:00,085 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 11:21:00,101 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,102 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,103 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,103 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,105 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,105 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,105 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,105 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,106 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,106 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,106 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,106 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:21:00 BoogieIcfgContainer [2019-12-07 11:21:00,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:21:00,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:21:00,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:21:00,128 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:21:00,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:20:56" (3/4) ... [2019-12-07 11:21:00,130 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 11:21:00,133 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,133 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,133 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,133 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,134 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,134 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,134 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,134 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,134 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,134 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,134 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,135 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 11:21:00,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_15d356ee-a020-4b1e-9170-36cf4f5b46d0/bin/utaipan/witness.graphml [2019-12-07 11:21:00,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:21:00,177 INFO L168 Benchmark]: Toolchain (without parser) took 4612.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -117.9 MB). Peak memory consumption was 79.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:21:00,177 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:21:00,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -147.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:21:00,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:21:00,178 INFO L168 Benchmark]: Boogie Preprocessor took 29.64 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:21:00,178 INFO L168 Benchmark]: RCFGBuilder took 383.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:21:00,179 INFO L168 Benchmark]: TraceAbstraction took 3874.31 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -9.0 MB). Peak memory consumption was 77.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:21:00,179 INFO L168 Benchmark]: Witness Printer took 48.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:21:00,180 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -147.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.64 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 383.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3874.31 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -9.0 MB). Peak memory consumption was 77.0 MB. Max. memory is 11.5 GB. * Witness Printer took 48.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 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: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L93] CALL nondet_tree() [L20] COND FALSE !(__VERIFIER_nondet_bool()) [L23] struct node *n = (struct node *)malloc(sizeof(struct node)); [L24] n->data = __VERIFIER_nondet_int() [L25] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L25] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={1:0}, n={1:0}, nondet_tree()={0:0}] [L25] n->left = nondet_tree() [L26] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L26] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={1:0}, n={1:0}, nondet_tree()={0:0}] [L26] n->right = nondet_tree() [L27] return n; VAL [\result={1:0}, malloc(sizeof(struct node))={1:0}, n={1:0}] [L93] RET nondet_tree() [L71] CALL, EXPR min(t) VAL [n={1:0}] [L32] COND FALSE !(!n) [L35] EXPR n->left VAL [n={1:0}, n={1:0}, n->left={0:0}] [L35] CALL, EXPR min(n->left) VAL [n={0:0}] [L32] COND TRUE !n [L33] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L35] RET, EXPR min(n->left) VAL [min(n->left)=2147483647, n={1:0}, n={1:0}, n->left={0:0}] [L35] int a = min(n->left); [L36] EXPR n->right VAL [a=2147483647, n={1:0}, n={1:0}, n->right={0:0}] [L36] CALL, EXPR min(n->right) VAL [n={0:0}] [L32] COND TRUE !n [L33] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L36] RET, EXPR min(n->right) VAL [a=2147483647, min(n->right)=2147483647, n={1:0}, n={1:0}, n->right={0:0}] [L36] int b = min(n->right); [L37] COND TRUE a <= b [L37] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={1:0}, n={1:0}] [L71] RET, EXPR min(t) [L71] int a = min(t); [L72] int b; [L74] CALL, EXPR size(t) VAL [t={1:0}] [L66] COND FALSE !(!t) [L67] EXPR t->left VAL [t={1:0}, t={1:0}, t->left={0:0}] [L67] CALL, EXPR size(t->left) VAL [t={0:0}] [L66] COND TRUE !t [L66] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L67] RET, EXPR size(t->left) VAL [size(t->left)=0, t={1:0}, t={1:0}, t->left={0:0}] [L67] EXPR t->right VAL [size(t->left)=0, t={1:0}, t={1:0}, t->left={0:0}, t->right={0:0}] [L67] CALL, EXPR size(t->right) VAL [t={0:0}] [L66] COND TRUE !t [L66] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L67] 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}] [L67] return size(t->left) + size(t->right) + 1; [L74] RET, EXPR size(t) [L74] int n = size(t); [L76] int *x = calloc(n, sizeof(int)); [L77] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={3:0}, t={1:0}] [L55] COND FALSE !(!t) [L58] EXPR t->left VAL [\old(i)=1, a={3:0}, a={3:0}, i=1, t={1:0}, t={1:0}, t->left={0:0}] [L58] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={3:0}, t={0:0}] [L55] COND TRUE !t [L56] return i; VAL [\old(i)=1, \result=1, a={3:0}, a={3:0}, i=1, t={0:0}, t={0:0}] [L58] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={3:0}, a={3:0}, i=1, t={1:0}, t={1:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L58] i = tree_inorder(t->left, a, i) [L59] EXPR i++ [L59] EXPR t->data [L59] a[i++] = t->data [L60] EXPR t->right VAL [\old(i)=1, a={3:0}, a={3:0}, i=2, t={1:0}, t={1:0}, t->right={0:0}] [L60] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={3:0}, t={0:0}] [L55] COND TRUE !t [L56] return i; VAL [\old(i)=2, \result=2, a={3:0}, a={3:0}, i=2, t={0:0}, t={0:0}] [L60] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={3:0}, a={3:0}, i=2, t={1:0}, t={1:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L60] i = tree_inorder(t->right, a, i) [L61] return i; VAL [\old(i)=1, \result=2, a={3:0}, a={3:0}, i=2, t={1:0}, t={1:0}] [L77] RET tree_inorder(t, x, n) [L78] x[0] [L11] COND TRUE !cond [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 locations, 4 error locations. Result: UNSAFE, OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 350 SDtfs, 133 SDslu, 1496 SDs, 0 SdLazy, 222 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 521 GetRequests, 488 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 54586 SizeOfPredicates, 35 NumberOfNonLiveVariables, 849 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 168/180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...