./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:40:48,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:40:48,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:40:48,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:40:48,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:40:48,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:40:48,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:40:48,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:40:48,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:40:48,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:40:48,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:40:48,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:40:48,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:40:48,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:40:48,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:40:48,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:40:48,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:40:48,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:40:48,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:40:48,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:40:48,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:40:48,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:40:48,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:40:48,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:40:48,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:40:48,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:40:48,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:40:48,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:40:48,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:40:48,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:40:48,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:40:48,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:40:48,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:40:48,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:40:48,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:40:48,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:40:48,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:40:48,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:40:48,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:40:48,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:40:48,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:40:48,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:40:48,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:40:48,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:40:48,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:40:48,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:40:48,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:40:48,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:40:48,475 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:40:48,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:40:48,475 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:40:48,476 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:40:48,476 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:40:48,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:40:48,476 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:40:48,476 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:40:48,476 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:40:48,477 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:40:48,477 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:40:48,477 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:40:48,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:40:48,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:40:48,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:40:48,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:40:48,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:40:48,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:40:48,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:40:48,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:40:48,478 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:40:48,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:40:48,479 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:40:48,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:40:48,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:40:48,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:40:48,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:40:48,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:40:48,480 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:40:48,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:40:48,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:40:48,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:40:48,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:40:48,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:40:48,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:40:48,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 [2022-12-14 13:40:48,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:40:48,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:40:48,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:40:48,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:40:48,686 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:40:48,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-regression/rule60_list2.i [2022-12-14 13:40:51,277 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:40:51,476 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:40:51,477 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/sv-benchmarks/c/ldv-regression/rule60_list2.i [2022-12-14 13:40:51,488 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/data/1d78acf4d/5848994a9e75428e937ab3c88541e627/FLAGcd7995fc9 [2022-12-14 13:40:51,502 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/data/1d78acf4d/5848994a9e75428e937ab3c88541e627 [2022-12-14 13:40:51,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:40:51,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:40:51,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:40:51,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:40:51,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:40:51,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b28581a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51, skipping insertion in model container [2022-12-14 13:40:51,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:40:51,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:40:51,659 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/sv-benchmarks/c/ldv-regression/rule60_list2.i[292,305] [2022-12-14 13:40:51,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:40:51,790 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:40:51,799 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/sv-benchmarks/c/ldv-regression/rule60_list2.i[292,305] [2022-12-14 13:40:51,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:40:51,854 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:40:51,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51 WrapperNode [2022-12-14 13:40:51,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:40:51,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:40:51,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:40:51,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:40:51,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,894 INFO L138 Inliner]: procedures = 126, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-14 13:40:51,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:40:51,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:40:51,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:40:51,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:40:51,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:40:51,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:40:51,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:40:51,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:40:51,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (1/1) ... [2022-12-14 13:40:51,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:40:51,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:40:51,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:40:51,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:40:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2022-12-14 13:40:51,980 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2022-12-14 13:40:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:40:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-12-14 13:40:51,981 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-12-14 13:40:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 13:40:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2022-12-14 13:40:51,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2022-12-14 13:40:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:40:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:40:51,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:40:52,070 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:40:52,072 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:40:52,189 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:40:52,228 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:40:52,228 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:40:52,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:40:52 BoogieIcfgContainer [2022-12-14 13:40:52,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:40:52,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:40:52,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:40:52,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:40:52,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:40:51" (1/3) ... [2022-12-14 13:40:52,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5f7505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:40:52, skipping insertion in model container [2022-12-14 13:40:52,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:51" (2/3) ... [2022-12-14 13:40:52,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5f7505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:40:52, skipping insertion in model container [2022-12-14 13:40:52,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:40:52" (3/3) ... [2022-12-14 13:40:52,241 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2022-12-14 13:40:52,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:40:52,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:40:52,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:40:52,310 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@286a19a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:40:52,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:40:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 13:40:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 13:40:52,319 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:52,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 13:40:52,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1054325285, now seen corresponding path program 1 times [2022-12-14 13:40:52,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:52,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444249725] [2022-12-14 13:40:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:40:52,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:52,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444249725] [2022-12-14 13:40:52,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444249725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:52,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:52,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:40:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619345253] [2022-12-14 13:40:52,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:52,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:40:52,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:52,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:40:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:40:52,533 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:40:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:52,585 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2022-12-14 13:40:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:40:52,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 13:40:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:52,592 INFO L225 Difference]: With dead ends: 46 [2022-12-14 13:40:52,593 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 13:40:52,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:40:52,597 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:52,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 49 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:40:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 13:40:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 13:40:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:40:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-12-14 13:40:52,622 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2022-12-14 13:40:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:52,623 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-12-14 13:40:52,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:40:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-12-14 13:40:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 13:40:52,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:52,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:52,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:40:52,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1738924518, now seen corresponding path program 1 times [2022-12-14 13:40:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:52,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776791436] [2022-12-14 13:40:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:40:52,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:52,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776791436] [2022-12-14 13:40:52,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776791436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:52,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:52,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 13:40:52,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077099865] [2022-12-14 13:40:52,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:52,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:40:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:52,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:40:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:40:52,843 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:40:52,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:52,927 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-12-14 13:40:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:40:52,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-12-14 13:40:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:52,929 INFO L225 Difference]: With dead ends: 27 [2022-12-14 13:40:52,929 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 13:40:52,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-14 13:40:52,931 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:52,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 51 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:40:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 13:40:52,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-12-14 13:40:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:40:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-12-14 13:40:52,938 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2022-12-14 13:40:52,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:52,939 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-12-14 13:40:52,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:40:52,940 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-12-14 13:40:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 13:40:52,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:52,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:52,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:40:52,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1398237025, now seen corresponding path program 1 times [2022-12-14 13:40:52,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:52,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022836780] [2022-12-14 13:40:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:52,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:40:53,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:53,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022836780] [2022-12-14 13:40:53,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022836780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:40:53,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742123135] [2022-12-14 13:40:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:53,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:40:53,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:40:53,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:40:53,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:40:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:53,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-14 13:40:53,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:40:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:40:54,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:40:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:40:55,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742123135] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:40:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [183347167] [2022-12-14 13:40:55,487 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 13:40:55,488 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:40:55,491 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:40:55,496 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:40:55,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:40:55,859 INFO L197 IcfgInterpreter]: Interpreting procedure list_add with input of size 34 for LOIs [2022-12-14 13:40:55,924 INFO L197 IcfgInterpreter]: Interpreting procedure __blast_assert with input of size 13 for LOIs [2022-12-14 13:40:55,926 INFO L197 IcfgInterpreter]: Interpreting procedure my_malloc with input of size 102 for LOIs [2022-12-14 13:40:56,026 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:40:58,392 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '404#(and (= |~#head~0.offset| 0) (= 4 |~#head~0.base|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:40:58,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:40:58,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:40:58,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 46 [2022-12-14 13:40:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125284714] [2022-12-14 13:40:58,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:40:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-14 13:40:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-14 13:40:58,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=3297, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 13:40:58,395 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 47 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 32 states have internal predecessors, (44), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 13:40:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:59,125 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-12-14 13:40:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 13:40:59,125 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 32 states have internal predecessors, (44), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 24 [2022-12-14 13:40:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:59,126 INFO L225 Difference]: With dead ends: 30 [2022-12-14 13:40:59,126 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 13:40:59,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=490, Invalid=5362, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 13:40:59,128 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 80 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:59,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 17 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:40:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 13:40:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-12-14 13:40:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:40:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-12-14 13:40:59,133 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 24 [2022-12-14 13:40:59,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:59,133 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-12-14 13:40:59,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 32 states have internal predecessors, (44), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 13:40:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-12-14 13:40:59,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 13:40:59,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:59,135 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:59,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:40:59,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:40:59,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:59,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1199616050, now seen corresponding path program 1 times [2022-12-14 13:40:59,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:59,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000349514] [2022-12-14 13:40:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:59,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:40:59,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:59,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000349514] [2022-12-14 13:40:59,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000349514] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:59,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:59,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 13:40:59,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714686874] [2022-12-14 13:40:59,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:59,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:40:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:40:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:40:59,450 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:40:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:59,488 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-12-14 13:40:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:40:59,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-12-14 13:40:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:59,489 INFO L225 Difference]: With dead ends: 23 [2022-12-14 13:40:59,489 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 13:40:59,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:40:59,490 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:59,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 58 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:40:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 13:40:59,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 13:40:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:40:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 13:40:59,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-12-14 13:40:59,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:59,492 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 13:40:59,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:40:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 13:40:59,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 13:40:59,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:40:59,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 13:40:59,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 13:40:59,634 INFO L899 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2022-12-14 13:40:59,634 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 528 530) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0)) (not (= |my_malloc_#in~size#1| 8)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= ~elem~0.base 0)) (not (= ~elem~0.offset 0))) [2022-12-14 13:40:59,634 INFO L895 garLoopResultBuilder]: At program point L522-2(line 522) the Hoare annotation is: (or (not (= |my_malloc_#in~size#1| 8)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= ~elem~0.base 0)) (not (= ~elem~0.offset 0))) [2022-12-14 13:40:59,635 INFO L895 garLoopResultBuilder]: At program point L522-3(line 522) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |my_malloc___getMemory_~size#1| 8) (= ~guard_malloc_counter~0.base 0)) (not (= |my_malloc_#in~size#1| 8)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= ~elem~0.base 0)) (not (= ~elem~0.offset 0))) [2022-12-14 13:40:59,635 INFO L899 garLoopResultBuilder]: For program point my_mallocEXIT(lines 528 530) no Hoare annotation was computed. [2022-12-14 13:40:59,635 INFO L899 garLoopResultBuilder]: For program point L536(line 536) no Hoare annotation was computed. [2022-12-14 13:40:59,635 INFO L895 garLoopResultBuilder]: At program point L536-2(line 536) the Hoare annotation is: (and (= |old(~elem~0.base)| |list_add_#in~new.base|) (= |old(~elem~0.offset)| |list_add_#in~new.offset|)) [2022-12-14 13:40:59,635 INFO L899 garLoopResultBuilder]: For program point L536-3(line 536) no Hoare annotation was computed. [2022-12-14 13:40:59,635 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 535 539) the Hoare annotation is: (or (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (and (= |old(~elem~0.base)| |list_add_#in~new.base|) (= |old(~elem~0.offset)| |list_add_#in~new.offset|))) [2022-12-14 13:40:59,635 INFO L899 garLoopResultBuilder]: For program point list_addEXIT(lines 535 539) no Hoare annotation was computed. [2022-12-14 13:40:59,635 INFO L899 garLoopResultBuilder]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2022-12-14 13:40:59,636 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 4 7) the Hoare annotation is: true [2022-12-14 13:40:59,636 INFO L899 garLoopResultBuilder]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2022-12-14 13:40:59,636 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 13:40:59,636 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 13:40:59,636 INFO L895 garLoopResultBuilder]: At program point L550(line 550) the Hoare annotation is: (and (= |ULTIMATE.start_main_~dev1~0#1.base| 0) (= ~elem~0.offset 0) (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) (< |ULTIMATE.start_main_~dev1~0#1.offset| (+ ~guard_malloc_counter~0.offset 1)) (= ~elem~0.base 0) (or (<= (+ |ULTIMATE.start_main_~dev1~0#1.offset| 1) |ULTIMATE.start_main_~dev2~0#1.offset|) (= 0 |ULTIMATE.start_main_~dev2~0#1.offset|)) (or (not (= ~elem~0.base |ULTIMATE.start_main_~dev2~0#1.base|)) (not (= ~elem~0.offset |ULTIMATE.start_main_~dev2~0#1.offset|))) (= ~guard_malloc_counter~0.base 0)) [2022-12-14 13:40:59,636 INFO L895 garLoopResultBuilder]: At program point L550-1(line 550) the Hoare annotation is: (and (not (= |ULTIMATE.start_main_~dev1~0#1.offset| |ULTIMATE.start_main_~dev2~0#1.offset|)) (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) (< |ULTIMATE.start_main_~dev1~0#1.offset| (+ ~guard_malloc_counter~0.offset 1)) (or (not (= |ULTIMATE.start_main_~dev2~0#1.base| 0)) (not (= 0 |ULTIMATE.start_main_~dev2~0#1.offset|))) (or (= ~elem~0.offset 0) (<= (+ |ULTIMATE.start_main_~dev1~0#1.offset| 1) ~elem~0.offset))) [2022-12-14 13:40:59,636 INFO L895 garLoopResultBuilder]: At program point L548(line 548) the Hoare annotation is: (and (= |ULTIMATE.start_main_~dev1~0#1.base| 0) (or (= ~guard_malloc_counter~0.offset |ULTIMATE.start_main_~dev1~0#1.offset|) (= |ULTIMATE.start_main_~dev1~0#1.offset| 0)) (= ~elem~0.offset 0) (<= 1 ~guard_malloc_counter~0.offset) (= ~elem~0.base 0) (= ~guard_malloc_counter~0.base 0)) [2022-12-14 13:40:59,636 INFO L899 garLoopResultBuilder]: For program point L548-1(line 548) no Hoare annotation was computed. [2022-12-14 13:40:59,637 INFO L895 garLoopResultBuilder]: At program point L553(line 553) the Hoare annotation is: (and (or (not (= |ULTIMATE.start_main_~dev2~0#1.base| 0)) (not (= 0 |ULTIMATE.start_main_~dev2~0#1.offset|))) (or (not (= ~elem~0.base |ULTIMATE.start_main_~dev2~0#1.base|)) (not (= ~elem~0.offset |ULTIMATE.start_main_~dev2~0#1.offset|)))) [2022-12-14 13:40:59,637 INFO L899 garLoopResultBuilder]: For program point L551(line 551) no Hoare annotation was computed. [2022-12-14 13:40:59,637 INFO L899 garLoopResultBuilder]: For program point L549(lines 549 554) no Hoare annotation was computed. [2022-12-14 13:40:59,637 INFO L902 garLoopResultBuilder]: At program point L549-1(lines 549 554) the Hoare annotation is: true [2022-12-14 13:40:59,637 INFO L895 garLoopResultBuilder]: At program point L547(line 547) the Hoare annotation is: (and (= ~elem~0.offset 0) (= ~elem~0.base 0) (<= 0 ~guard_malloc_counter~0.offset) (= ~guard_malloc_counter~0.base 0)) [2022-12-14 13:40:59,637 INFO L899 garLoopResultBuilder]: For program point L547-1(line 547) no Hoare annotation was computed. [2022-12-14 13:40:59,640 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-14 13:40:59,641 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:40:59,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:40:59 BoogieIcfgContainer [2022-12-14 13:40:59,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:40:59,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:40:59,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:40:59,652 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:40:59,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:40:52" (3/4) ... [2022-12-14 13:40:59,654 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 13:40:59,657 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_malloc [2022-12-14 13:40:59,657 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure list_add [2022-12-14 13:40:59,657 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __blast_assert [2022-12-14 13:40:59,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-14 13:40:59,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-14 13:40:59,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 13:40:59,661 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 13:40:59,676 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((guard_malloc_counter == \old(guard_malloc_counter) && size == 8) && guard_malloc_counter == 0) || !(\old(size) == 8)) || !(\old(guard_malloc_counter) == 0)) || !(0 <= \old(guard_malloc_counter))) || !(elem == 0)) || !(elem == 0) [2022-12-14 13:40:59,683 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:40:59,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:40:59,683 INFO L158 Benchmark]: Toolchain (without parser) took 8177.97ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 108.9MB in the beginning and 206.2MB in the end (delta: -97.3MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2022-12-14 13:40:59,684 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:40:59,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.20ms. Allocated memory is still 140.5MB. Free memory was 108.9MB in the beginning and 92.1MB in the end (delta: 16.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 13:40:59,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.94ms. Allocated memory is still 140.5MB. Free memory was 92.1MB in the beginning and 90.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:40:59,684 INFO L158 Benchmark]: Boogie Preprocessor took 23.26ms. Allocated memory is still 140.5MB. Free memory was 90.4MB in the beginning and 89.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:40:59,684 INFO L158 Benchmark]: RCFGBuilder took 312.34ms. Allocated memory is still 140.5MB. Free memory was 89.2MB in the beginning and 73.6MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 13:40:59,685 INFO L158 Benchmark]: TraceAbstraction took 7416.66ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 73.2MB in the beginning and 209.3MB in the end (delta: -136.1MB). Peak memory consumption was 104.2MB. Max. memory is 16.1GB. [2022-12-14 13:40:59,685 INFO L158 Benchmark]: Witness Printer took 31.74ms. Allocated memory is still 247.5MB. Free memory was 209.3MB in the beginning and 206.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 13:40:59,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.20ms. Allocated memory is still 140.5MB. Free memory was 108.9MB in the beginning and 92.1MB in the end (delta: 16.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.94ms. Allocated memory is still 140.5MB. Free memory was 92.1MB in the beginning and 90.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.26ms. Allocated memory is still 140.5MB. Free memory was 90.4MB in the beginning and 89.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 312.34ms. Allocated memory is still 140.5MB. Free memory was 89.2MB in the beginning and 73.6MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7416.66ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 73.2MB in the beginning and 209.3MB in the end (delta: -136.1MB). Peak memory consumption was 104.2MB. Max. memory is 16.1GB. * Witness Printer took 31.74ms. Allocated memory is still 247.5MB. Free memory was 209.3MB in the beginning and 206.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 120 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 616 IncrementalHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 55 mSDtfsCounter, 616 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1557 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 37, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 32 PreInvPairs, 39 NumberOfFragments, 229 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 178 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 1088 SizeOfPredicates, 23 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 19/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 549]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 522]: Loop Invariant Derived loop invariant: ((((((guard_malloc_counter == \old(guard_malloc_counter) && size == 8) && guard_malloc_counter == 0) || !(\old(size) == 8)) || !(\old(guard_malloc_counter) == 0)) || !(0 <= \old(guard_malloc_counter))) || !(elem == 0)) || !(elem == 0) RESULT: Ultimate proved your program to be correct! [2022-12-14 13:40:59,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac068e5-3da2-4126-848d-854ac7969ec2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE