./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/chunk3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 19fa5e5331bf5f5328e727d3adbf080a08b9ec2fa548b9c0eb2f35cc19738b3d --- 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-8393723 [2022-11-19 07:13:11,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:13:11,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:13:11,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:13:11,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:13:11,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:13:11,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:13:11,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:13:11,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:13:11,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:13:11,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:13:11,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:13:11,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:13:11,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:13:11,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:13:11,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:13:11,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:13:11,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:13:11,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:13:11,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:13:11,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:13:11,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:13:11,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:13:11,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:13:11,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:13:11,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:13:11,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:13:11,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:13:11,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:13:11,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:13:11,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:13:11,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:13:11,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:13:11,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:13:11,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:13:11,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:13:11,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:13:11,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:13:11,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:13:11,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:13:11,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:13:11,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 07:13:11,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:13:11,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:13:11,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:13:11,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:13:11,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:13:11,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:13:11,611 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:13:11,612 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:13:11,612 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:13:11,612 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:13:11,613 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:13:11,613 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:13:11,614 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:13:11,614 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:13:11,614 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:13:11,614 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:13:11,614 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:13:11,615 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:13:11,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:13:11,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:13:11,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:13:11,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:13:11,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:13:11,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:13:11,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:13:11,617 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:13:11,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:13:11,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:13:11,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:13:11,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:13:11,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:13:11,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:13:11,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:13:11,621 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:13:11,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:13:11,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:13:11,621 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:13:11,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:13:11,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:13:11,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:13:11,623 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_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19fa5e5331bf5f5328e727d3adbf080a08b9ec2fa548b9c0eb2f35cc19738b3d [2022-11-19 07:13:11,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:13:11,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:13:11,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:13:11,912 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:13:11,913 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:13:11,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-recursive-malloc/chunk3.i [2022-11-19 07:13:12,006 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/data/621573472/65a101dd9acf4e5190ff55e94ee15d81/FLAGbb4a7399b [2022-11-19 07:13:12,494 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:13:12,495 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/sv-benchmarks/c/termination-recursive-malloc/chunk3.i [2022-11-19 07:13:12,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/data/621573472/65a101dd9acf4e5190ff55e94ee15d81/FLAGbb4a7399b [2022-11-19 07:13:12,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/data/621573472/65a101dd9acf4e5190ff55e94ee15d81 [2022-11-19 07:13:12,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:13:12,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:13:12,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:13:12,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:13:12,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:13:12,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:13:12" (1/1) ... [2022-11-19 07:13:12,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf6e418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:12, skipping insertion in model container [2022-11-19 07:13:12,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:13:12" (1/1) ... [2022-11-19 07:13:12,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:13:12,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:13:13,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:13:13,156 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:13:13,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:13:13,208 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:13:13,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13 WrapperNode [2022-11-19 07:13:13,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:13:13,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:13:13,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:13:13,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:13:13,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,258 INFO L138 Inliner]: procedures = 13, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2022-11-19 07:13:13,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:13:13,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:13:13,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:13:13,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:13:13,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:13:13,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:13:13,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:13:13,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:13:13,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (1/1) ... [2022-11-19 07:13:13,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:13:13,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:13:13,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:13:13,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:13:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:13:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2022-11-19 07:13:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2022-11-19 07:13:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:13:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:13:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:13:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:13:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:13:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:13:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:13:13,497 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:13:13,499 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:13:13,720 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:13:13,739 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:13:13,739 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:13:13,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:13:13 BoogieIcfgContainer [2022-11-19 07:13:13,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:13:13,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:13:13,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:13:13,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:13:13,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:13:12" (1/3) ... [2022-11-19 07:13:13,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac3109b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:13:13, skipping insertion in model container [2022-11-19 07:13:13,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:13:13" (2/3) ... [2022-11-19 07:13:13,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac3109b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:13:13, skipping insertion in model container [2022-11-19 07:13:13,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:13:13" (3/3) ... [2022-11-19 07:13:13,777 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk3.i [2022-11-19 07:13:13,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:13:13,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:13:13,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:13:13,909 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;@338ad9d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:13:13,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:13:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:13:13,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:13:13,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:13,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:13:13,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-19 07:13:13,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1736100445, now seen corresponding path program 1 times [2022-11-19 07:13:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:13:13,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17399081] [2022-11-19 07:13:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:13,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:13:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:13:15,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:13:15,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17399081] [2022-11-19 07:13:15,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17399081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:15,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:13:15,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:13:15,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691096591] [2022-11-19 07:13:15,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:15,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:13:15,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:13:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:13:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:13:15,320 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:13:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:15,687 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-11-19 07:13:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:13:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:13:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:15,696 INFO L225 Difference]: With dead ends: 27 [2022-11-19 07:13:15,696 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 07:13:15,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:13:15,703 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:15,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 37 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:13:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 07:13:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2022-11-19 07:13:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-11-19 07:13:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-19 07:13:15,739 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2022-11-19 07:13:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:15,739 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-19 07:13:15,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:13:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-19 07:13:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:13:15,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:15,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:13:15,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:13:15,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-19 07:13:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2015461015, now seen corresponding path program 1 times [2022-11-19 07:13:15,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:13:15,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772751461] [2022-11-19 07:13:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:13:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:13:16,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:13:16,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772751461] [2022-11-19 07:13:16,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772751461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:16,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:13:16,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:13:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849467935] [2022-11-19 07:13:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:16,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:13:16,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:13:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:13:16,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:13:16,498 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:13:16,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:16,710 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-19 07:13:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:13:16,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 07:13:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:16,711 INFO L225 Difference]: With dead ends: 15 [2022-11-19 07:13:16,712 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:13:16,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:13:16,713 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:16,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:13:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:13:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-19 07:13:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-19 07:13:16,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-19 07:13:16,718 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2022-11-19 07:13:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:16,718 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-19 07:13:16,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:13:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-19 07:13:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:13:16,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:16,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:13:16,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:13:16,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-19 07:13:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2003363278, now seen corresponding path program 1 times [2022-11-19 07:13:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:13:16,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419001677] [2022-11-19 07:13:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:13:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:13:16,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:13:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:13:17,029 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:13:17,029 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:13:17,030 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-19 07:13:17,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-19 07:13:17,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:13:17,041 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-19 07:13:17,045 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:13:17,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:13:17 BoogieIcfgContainer [2022-11-19 07:13:17,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:13:17,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:13:17,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:13:17,099 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:13:17,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:13:13" (3/4) ... [2022-11-19 07:13:17,101 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:13:17,162 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:13:17,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:13:17,169 INFO L158 Benchmark]: Toolchain (without parser) took 4322.91ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 108.2MB in the beginning and 124.5MB in the end (delta: -16.3MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2022-11-19 07:13:17,169 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:13:17,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.31ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 119.4MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:13:17,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.33ms. Allocated memory is still 142.6MB. Free memory was 119.4MB in the beginning and 117.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:13:17,171 INFO L158 Benchmark]: Boogie Preprocessor took 41.84ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 116.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:13:17,171 INFO L158 Benchmark]: RCFGBuilder took 440.15ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 99.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 07:13:17,171 INFO L158 Benchmark]: TraceAbstraction took 3353.28ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 97.9MB in the beginning and 126.6MB in the end (delta: -28.7MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2022-11-19 07:13:17,172 INFO L158 Benchmark]: Witness Printer took 69.12ms. Allocated memory is still 184.5MB. Free memory was 126.6MB in the beginning and 124.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:13:17,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 360.31ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 119.4MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.33ms. Allocated memory is still 142.6MB. Free memory was 119.4MB in the beginning and 117.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.84ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 116.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.15ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 99.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3353.28ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 97.9MB in the beginning and 126.6MB in the end (delta: -28.7MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Witness Printer took 69.12ms. Allocated memory is still 184.5MB. Free memory was 126.6MB in the beginning and 124.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L32] int **data = malloc(4*sizeof(int*)); [L35] int *p0 = malloc(sizeof(int)); [L36] int *p1 = malloc(sizeof(int)); [L37] int *p2 = malloc(sizeof(int)); [L38] int *p3 = malloc(sizeof(int)); [L41] int i = __VERIFIER_nondet_int(); [L42] int upper = __VERIFIER_nondet_int(); [L44] COND FALSE !(i >= upper) [L47] *p0 = i [L48] *p3 = upper [L52] data[0] = p0 [L53] data[1] = p1 [L54] data[2] = p2 [L55] data[3] = p3 VAL [data={-5:0}, i=2147483646, p0={-1:0}, p1={-7:0}, p2={-3:0}, p3={-4:0}, upper=2147483647] [L59] CALL chunk(data) VAL [data={-5:0}] [L9] EXPR data[0] [L9] int *p0 = data[0]; [L10] EXPR data[1] [L10] int *p1 = data[1]; [L11] EXPR data[2] [L11] int *p2 = data[2]; [L12] EXPR data[3] [L12] int *p3 = data[3]; [L14] EXPR \read(*p0) [L14] EXPR \read(*p3) VAL [\read(*p0)=2147483646, \read(*p3)=2147483647, data={-5:0}, data={-5:0}, p0={-1:0}, p1={-7:0}, p2={-3:0}, p3={-4:0}] [L14] COND FALSE !(*p0 >= *p3) [L17] EXPR \read(*p0) [L17] (*p0)++ [L19] EXPR \read(*p3) [L19] *p2 = *p3 [L21] data[1] = malloc(sizeof(int*)) [L22] EXPR data[1] [L22] data[2] = data[1] [L23] EXPR data[2] [L23] data[3] = data[2] [L25] CALL chunk(data) VAL [data={-5:0}] [L9] EXPR data[0] [L9] int *p0 = data[0]; [L10] EXPR data[1] [L10] int *p1 = data[1]; [L11] EXPR data[2] [L11] int *p2 = data[2]; [L12] EXPR data[3] [L12] int *p3 = data[3]; [L14] EXPR \read(*p0) [L14] EXPR \read(*p3) VAL [\read(*p0)=2147483647, \read(*p3)=2147483648, data={-5:0}, data={-5:0}, p0={-1:0}, p1={-6:0}, p2={-6:0}, p3={-6:0}] [L14] COND FALSE !(*p0 >= *p3) [L17] EXPR \read(*p0) [L17] (*p0)++ VAL [(*p0)++=2147483647, \read(*p0)=2147483647, data={-5:0}, data={-5:0}, p0={-1:0}, p1={-6:0}, p2={-6:0}, p3={-6:0}] - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 11 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 07:13:17,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d311e7b-c5bd-465c-a74f-85858018742d/bin/utaipan-I9t0OCRTmS/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)