./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_del_iter_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_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c -s /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 d3ff8ae763cd253b2864cd8208bb318e170f6466 ....................................................................................................................................... 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_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c -s /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 d3ff8ae763cd253b2864cd8208bb318e170f6466 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:26:09,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:26:09,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:26:09,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:26:09,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:26:09,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:26:09,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:26:09,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:26:09,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:26:09,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:26:09,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:26:09,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:26:09,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:26:09,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:26:09,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:26:09,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:26:09,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:26:09,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:26:09,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:26:09,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:26:09,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:26:09,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:26:09,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:26:09,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:26:09,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:26:09,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:26:09,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:26:09,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:26:09,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:26:09,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:26:09,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:26:09,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:26:09,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:26:09,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:26:09,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:26:09,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:26:09,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:26:09,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:26:09,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:26:09,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:26:09,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:26:09,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:26:09,556 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:26:09,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:26:09,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:26:09,557 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:26:09,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:26:09,557 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:26:09,557 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:26:09,557 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:26:09,557 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:26:09,558 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:26:09,558 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:26:09,558 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:26:09,558 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:26:09,558 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:26:09,558 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:26:09,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:26:09,559 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:26:09,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:26:09,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:26:09,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:26:09,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:26:09,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:26:09,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:26:09,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:26:09,560 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:26:09,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:26:09,560 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:26:09,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:26:09,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:26:09,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:26:09,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:26:09,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:26:09,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:26:09,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:26:09,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:26:09,561 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:26:09,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:26:09,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:26:09,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:26:09,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:26:09,562 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_82ca57cf-aa58-4395-a925-4910ad3b0008/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 -> d3ff8ae763cd253b2864cd8208bb318e170f6466 [2019-12-07 20:26:09,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:26:09,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:26:09,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:26:09,671 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:26:09,672 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:26:09,672 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2019-12-07 20:26:09,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data/fffa7d4ec/4c91035cce26406290216f0e55d4fd18/FLAGfe31ba811 [2019-12-07 20:26:10,135 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:26:10,135 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2019-12-07 20:26:10,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data/fffa7d4ec/4c91035cce26406290216f0e55d4fd18/FLAGfe31ba811 [2019-12-07 20:26:10,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data/fffa7d4ec/4c91035cce26406290216f0e55d4fd18 [2019-12-07 20:26:10,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:26:10,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:26:10,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:26:10,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:26:10,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:26:10,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:26:10" (1/1) ... [2019-12-07 20:26:10,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d0e7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:10, skipping insertion in model container [2019-12-07 20:26:10,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:26:10" (1/1) ... [2019-12-07 20:26:10,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:26:10,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:26:10,321 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 20:26:10,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:26:10,344 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 20:26:10,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c80c40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:10, skipping insertion in model container [2019-12-07 20:26:10,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:26:10,345 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 20:26:10,346 INFO L168 Benchmark]: Toolchain (without parser) took 195.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -149.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:10,347 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:26:10,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -149.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:10,349 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 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -149.3 MB). Peak memory consumption was 24.1 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 20:26:11,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:26:11,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:26:11,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:26:11,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:26:11,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:26:11,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:26:11,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:26:11,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:26:11,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:26:11,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:26:11,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:26:11,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:26:11,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:26:11,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:26:11,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:26:11,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:26:11,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:26:11,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:26:11,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:26:11,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:26:11,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:26:11,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:26:11,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:26:11,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:26:11,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:26:11,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:26:11,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:26:11,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:26:11,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:26:11,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:26:11,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:26:11,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:26:11,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:26:11,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:26:11,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:26:11,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:26:11,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:26:11,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:26:11,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:26:11,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:26:11,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 20:26:11,498 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:26:11,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:26:11,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:26:11,499 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:26:11,499 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:26:11,499 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:26:11,499 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:26:11,499 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:26:11,499 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:26:11,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:26:11,500 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:26:11,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:26:11,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:26:11,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:26:11,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:26:11,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:26:11,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:26:11,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 20:26:11,501 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 20:26:11,501 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:26:11,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:26:11,502 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:26:11,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:26:11,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:26:11,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 20:26:11,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:26:11,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:26:11,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:26:11,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:26:11,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:26:11,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:26:11,503 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 20:26:11,503 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 20:26:11,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:26:11,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:26:11,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:26:11,504 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_82ca57cf-aa58-4395-a925-4910ad3b0008/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 -> d3ff8ae763cd253b2864cd8208bb318e170f6466 [2019-12-07 20:26:11,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:26:11,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:26:11,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:26:11,688 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:26:11,689 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:26:11,689 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2019-12-07 20:26:11,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data/84c3a5c67/ef70c7581226459b930eda037a931993/FLAG7787e5886 [2019-12-07 20:26:12,171 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:26:12,172 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2019-12-07 20:26:12,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data/84c3a5c67/ef70c7581226459b930eda037a931993/FLAG7787e5886 [2019-12-07 20:26:12,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/data/84c3a5c67/ef70c7581226459b930eda037a931993 [2019-12-07 20:26:12,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:26:12,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:26:12,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:26:12,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:26:12,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:26:12,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171b6e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12, skipping insertion in model container [2019-12-07 20:26:12,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:26:12,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:26:12,316 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 20:26:12,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:26:12,335 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 20:26:12,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:26:12,345 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 20:26:12,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:26:12,357 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:26:12,399 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 20:26:12,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:26:12,420 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:26:12,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12 WrapperNode [2019-12-07 20:26:12,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:26:12,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:26:12,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:26:12,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:26:12,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:26:12,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:26:12,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:26:12,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:26:12,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... [2019-12-07 20:26:12,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:26:12,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:26:12,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:26:12,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:26:12,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 20:26:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:26:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 20:26:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure min [2019-12-07 20:26:12,521 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2019-12-07 20:26:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 20:26:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 20:26:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2019-12-07 20:26:12,521 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2019-12-07 20:26:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 20:26:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure size [2019-12-07 20:26:12,521 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2019-12-07 20:26:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:26:12,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:26:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2019-12-07 20:26:12,522 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2019-12-07 20:26:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:26:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 20:26:12,876 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:26:12,877 INFO L287 CfgBuilder]: Removed 22 assume(true) statements. [2019-12-07 20:26:12,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:26:12 BoogieIcfgContainer [2019-12-07 20:26:12,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:26:12,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:26:12,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:26:12,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:26:12,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:26:12" (1/3) ... [2019-12-07 20:26:12,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713048b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:26:12, skipping insertion in model container [2019-12-07 20:26:12,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:12" (2/3) ... [2019-12-07 20:26:12,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713048b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:26:12, skipping insertion in model container [2019-12-07 20:26:12,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:26:12" (3/3) ... [2019-12-07 20:26:12,883 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2019-12-07 20:26:12,889 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:26:12,894 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 20:26:12,901 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 20:26:12,916 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:26:12,916 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:26:12,916 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:26:12,916 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:26:12,916 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:26:12,916 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:26:12,917 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:26:12,917 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:26:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2019-12-07 20:26:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 20:26:12,933 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:26:12,934 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 20:26:12,934 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:26:12,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:26:12,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1356719622, now seen corresponding path program 1 times [2019-12-07 20:26:12,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:26:12,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400197259] [2019-12-07 20:26:12,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 20:26:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:26:13,014 INFO L264 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 20:26:13,018 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:26:13,047 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 20:26:13,047 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:26:13,079 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 20:26:13,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400197259] [2019-12-07 20:26:13,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:26:13,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 20:26:13,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130901286] [2019-12-07 20:26:13,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:26:13,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:26:13,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:26:13,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:26:13,095 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2019-12-07 20:26:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:26:13,133 INFO L93 Difference]: Finished difference Result 131 states and 172 transitions. [2019-12-07 20:26:13,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:26:13,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-12-07 20:26:13,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:26:13,145 INFO L225 Difference]: With dead ends: 131 [2019-12-07 20:26:13,145 INFO L226 Difference]: Without dead ends: 73 [2019-12-07 20:26:13,148 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 20:26:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-12-07 20:26:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2019-12-07 20:26:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-12-07 20:26:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2019-12-07 20:26:13,188 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 28 [2019-12-07 20:26:13,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:26:13,188 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2019-12-07 20:26:13,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:26:13,188 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2019-12-07 20:26:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 20:26:13,191 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:26:13,191 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 20:26:13,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 20:26:13,392 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:26:13,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:26:13,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1337389131, now seen corresponding path program 1 times [2019-12-07 20:26:13,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:26:13,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046329546] [2019-12-07 20:26:13,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 20:26:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:26:13,494 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 20:26:13,497 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:26:13,557 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 20:26:13,557 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:26:13,679 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 20:26:13,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046329546] [2019-12-07 20:26:13,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1753603715] [2019-12-07 20:26:13,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 20:26:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:26:13,815 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 20:26:13,818 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:26:13,827 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 20:26:13,827 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:26:13,923 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 20:26:13,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669734231] [2019-12-07 20:26:13,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 20:26:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:26:14,014 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 20:26:14,017 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:26:14,025 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 20:26:14,025 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:26:14,109 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 20:26:14,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 20:26:14,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 8 [2019-12-07 20:26:14,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958544239] [2019-12-07 20:26:14,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 20:26:14,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:26:14,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 20:26:14,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-07 20:26:14,112 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand 8 states. [2019-12-07 20:26:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:26:14,238 INFO L93 Difference]: Finished difference Result 129 states and 163 transitions. [2019-12-07 20:26:14,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 20:26:14,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2019-12-07 20:26:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:26:14,240 INFO L225 Difference]: With dead ends: 129 [2019-12-07 20:26:14,240 INFO L226 Difference]: Without dead ends: 75 [2019-12-07 20:26:14,241 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-12-07 20:26:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-12-07 20:26:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-12-07 20:26:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-12-07 20:26:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2019-12-07 20:26:14,250 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 40 [2019-12-07 20:26:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:26:14,250 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2019-12-07 20:26:14,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 20:26:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2019-12-07 20:26:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 20:26:14,251 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:26:14,252 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 20:26:14,853 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 20:26:14,853 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:26:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:26:14,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1495057778, now seen corresponding path program 1 times [2019-12-07 20:26:14,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:26:14,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638896619] [2019-12-07 20:26:14,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 20:26:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:26:14,949 INFO L264 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 20:26:14,951 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:26:14,986 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 20:26:14,986 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:26:15,059 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 20:26:15,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638896619] [2019-12-07 20:26:15,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:26:15,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-12-07 20:26:15,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917030539] [2019-12-07 20:26:15,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 20:26:15,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:26:15,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 20:26:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-12-07 20:26:15,061 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand 9 states. [2019-12-07 20:26:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:26:15,180 INFO L93 Difference]: Finished difference Result 129 states and 163 transitions. [2019-12-07 20:26:15,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 20:26:15,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2019-12-07 20:26:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:26:15,182 INFO L225 Difference]: With dead ends: 129 [2019-12-07 20:26:15,182 INFO L226 Difference]: Without dead ends: 77 [2019-12-07 20:26:15,183 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 20:26:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-12-07 20:26:15,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-12-07 20:26:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-12-07 20:26:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2019-12-07 20:26:15,191 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 50 [2019-12-07 20:26:15,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:26:15,192 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2019-12-07 20:26:15,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 20:26:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2019-12-07 20:26:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 20:26:15,194 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:26:15,201 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 20:26:15,402 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 20:26:15,402 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:26:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:26:15,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1674887080, now seen corresponding path program 1 times [2019-12-07 20:26:15,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:26:15,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723816036] [2019-12-07 20:26:15,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 20:26:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:26:15,526 INFO L264 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 20:26:15,528 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:26:15,564 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 20:26:15,564 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:26:15,639 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 20:26:15,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723816036] [2019-12-07 20:26:15,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:26:15,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-12-07 20:26:15,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083396780] [2019-12-07 20:26:15,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 20:26:15,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:26:15,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 20:26:15,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-12-07 20:26:15,640 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand 9 states. [2019-12-07 20:26:15,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:26:15,941 INFO L93 Difference]: Finished difference Result 126 states and 160 transitions. [2019-12-07 20:26:15,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 20:26:15,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2019-12-07 20:26:15,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:26:15,944 INFO L225 Difference]: With dead ends: 126 [2019-12-07 20:26:15,944 INFO L226 Difference]: Without dead ends: 79 [2019-12-07 20:26:15,944 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 20:26:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-12-07 20:26:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-12-07 20:26:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-12-07 20:26:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2019-12-07 20:26:15,953 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 63 [2019-12-07 20:26:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:26:15,953 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2019-12-07 20:26:15,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 20:26:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2019-12-07 20:26:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-07 20:26:15,956 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:26:15,956 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 20:26:16,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 20:26:16,157 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:26:16,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:26:16,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1897149291, now seen corresponding path program 1 times [2019-12-07 20:26:16,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:26:16,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726378695] [2019-12-07 20:26:16,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/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 20:26:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:26:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:26:16,596 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 20:26:16,596 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:26:16,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 20:26:16,814 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,815 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,815 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,815 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,817 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,817 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,818 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,818 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,818 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,818 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,818 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,819 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:26:16 BoogieIcfgContainer [2019-12-07 20:26:16,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:26:16,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:26:16,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:26:16,841 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:26:16,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:26:12" (3/4) ... [2019-12-07 20:26:16,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 20:26:16,846 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,846 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,846 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,846 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 20:26:16,890 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_82ca57cf-aa58-4395-a925-4910ad3b0008/bin/utaipan/witness.graphml [2019-12-07 20:26:16,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:26:16,892 INFO L168 Benchmark]: Toolchain (without parser) took 4704.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.3 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -111.7 MB). Peak memory consumption was 88.6 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:16,892 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 20:26:16,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -161.3 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:16,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.81 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 20:26:16,893 INFO L168 Benchmark]: Boogie Preprocessor took 27.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:16,893 INFO L168 Benchmark]: RCFGBuilder took 396.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:16,893 INFO L168 Benchmark]: TraceAbstraction took 3961.96 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -2.7 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:16,893 INFO L168 Benchmark]: Witness Printer took 49.95 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 20:26:16,895 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 233.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -161.3 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.81 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. * Boogie Preprocessor took 27.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 396.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3961.96 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -2.7 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. * Witness Printer took 49.95 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: [L100] 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}] [L100] RET nondet_tree() [L78] 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}] [L78] RET, EXPR min(t) [L78] int a = min(t); [L79] int b; [L81] CALL, EXPR size(t) VAL [t={1:0}] [L73] COND FALSE !(!t) [L74] EXPR t->left VAL [t={1:0}, t={1:0}, t->left={0:0}] [L74] CALL, EXPR size(t->left) VAL [t={0:0}] [L73] COND TRUE !t [L73] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L74] RET, EXPR size(t->left) VAL [size(t->left)=0, t={1:0}, t={1:0}, t->left={0:0}] [L74] EXPR t->right VAL [size(t->left)=0, t={1:0}, t={1:0}, t->left={0:0}, t->right={0:0}] [L74] CALL, EXPR size(t->right) VAL [t={0:0}] [L73] COND TRUE !t [L73] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L74] 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}] [L74] return size(t->left) + size(t->right) + 1; [L81] RET, EXPR size(t) [L81] int n = size(t); [L83] int *x = calloc(n, sizeof(int)); [L84] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={3:0}, t={1:0}] [L62] COND FALSE !(!t) [L65] 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}] [L65] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={3:0}, t={0:0}] [L62] COND TRUE !t [L63] return i; VAL [\old(i)=1, \result=1, a={3:0}, a={3:0}, i=1, t={0:0}, t={0:0}] [L65] 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] [L65] i = tree_inorder(t->left, a, i) [L66] EXPR i++ [L66] EXPR t->data [L66] a[i++] = t->data [L67] 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}] [L67] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={3:0}, t={0:0}] [L62] COND TRUE !t [L63] return i; VAL [\old(i)=2, \result=2, a={3:0}, a={3:0}, i=2, t={0:0}, t={0:0}] [L67] 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] [L67] i = tree_inorder(t->right, a, i) [L68] return i; VAL [\old(i)=1, \result=2, a={3:0}, a={3:0}, i=2, t={1:0}, t={1:0}] [L84] RET tree_inorder(t, x, n) [L85] x[0] [L11] COND TRUE !cond [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 76 locations, 4 error locations. Result: UNSAFE, OverallTime: 3.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 336 SDtfs, 165 SDslu, 1259 SDs, 0 SdLazy, 219 SolverSat, 29 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=79occurred 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: 0.1s SsaConstructionTime, 0.4s 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...