./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan --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 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 ..................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 09:56:06,449 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:56:06,450 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:56:06,456 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:56:06,456 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:56:06,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:56:06,457 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:56:06,458 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:56:06,459 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:56:06,459 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:56:06,459 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:56:06,460 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:56:06,460 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:56:06,460 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:56:06,461 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:56:06,461 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:56:06,462 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:56:06,463 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:56:06,463 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:56:06,464 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:56:06,465 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:56:06,465 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:56:06,466 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:56:06,467 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:56:06,467 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:56:06,467 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:56:06,468 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:56:06,468 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:56:06,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:56:06,469 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:56:06,469 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:56:06,469 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:56:06,470 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:56:06,470 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:56:06,470 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:56:06,470 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:56:06,471 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-09 09:56:06,478 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:56:06,478 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:56:06,478 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:56:06,478 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:56:06,479 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 09:56:06,479 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 09:56:06,479 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 09:56:06,479 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 09:56:06,479 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 09:56:06,479 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 09:56:06,479 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 09:56:06,479 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 09:56:06,479 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 09:56:06,480 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:56:06,480 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 09:56:06,480 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 09:56:06,480 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:56:06,480 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:56:06,480 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:56:06,480 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:56:06,480 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 09:56:06,480 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:56:06,480 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:56:06,481 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:56:06,481 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:56:06,481 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:56:06,481 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:56:06,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:56:06,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:56:06,481 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:56:06,481 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:56:06,481 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 09:56:06,481 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:56:06,482 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 09:56:06,482 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 09:56:06,482 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 [2018-12-09 09:56:06,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:56:06,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:56:06,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:56:06,508 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:56:06,508 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:56:06,508 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp_false-no-overflow.c [2018-12-09 09:56:06,547 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/data/88dc6fbcf/bfa4901b62cd4a0ea7657d79f439a1a1/FLAG10246ae15 [2018-12-09 09:56:07,022 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:56:07,022 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/sv-benchmarks/c/termination-crafted-lit/cstrncmp_false-no-overflow.c [2018-12-09 09:56:07,025 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/data/88dc6fbcf/bfa4901b62cd4a0ea7657d79f439a1a1/FLAG10246ae15 [2018-12-09 09:56:07,528 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/data/88dc6fbcf/bfa4901b62cd4a0ea7657d79f439a1a1 [2018-12-09 09:56:07,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:56:07,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:56:07,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:56:07,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:56:07,533 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:56:07,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643265e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07, skipping insertion in model container [2018-12-09 09:56:07,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:56:07,549 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:56:07,636 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:56:07,641 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:56:07,652 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:56:07,660 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:56:07,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07 WrapperNode [2018-12-09 09:56:07,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:56:07,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:56:07,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:56:07,661 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:56:07,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:56:07,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:56:07,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:56:07,675 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:56:07,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... [2018-12-09 09:56:07,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:56:07,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:56:07,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:56:07,722 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:56:07,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:56:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 09:56:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-12-09 09:56:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-12-09 09:56:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 09:56:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 09:56:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:56:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:56:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:56:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 09:56:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 09:56:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 09:56:07,758 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-12-09 09:56:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-12-09 09:56:07,909 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:56:07,909 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 09:56:07,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:56:07 BoogieIcfgContainer [2018-12-09 09:56:07,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:56:07,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:56:07,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:56:07,913 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:56:07,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:56:07" (1/3) ... [2018-12-09 09:56:07,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa62604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:56:07, skipping insertion in model container [2018-12-09 09:56:07,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:07" (2/3) ... [2018-12-09 09:56:07,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa62604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:56:07, skipping insertion in model container [2018-12-09 09:56:07,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:56:07" (3/3) ... [2018-12-09 09:56:07,915 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncmp_false-no-overflow.c [2018-12-09 09:56:07,923 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:56:07,928 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-09 09:56:07,941 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-09 09:56:07,962 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:56:07,962 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:56:07,962 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:56:07,962 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:56:07,962 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:56:07,962 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:56:07,962 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:56:07,962 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:56:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-09 09:56:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 09:56:07,976 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:56:07,976 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:56:07,978 INFO L423 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 09:56:07,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:56:07,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1438395105, now seen corresponding path program 1 times [2018-12-09 09:56:07,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:56:08,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:56:08,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,011 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:56:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:56:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:56:08,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:56:08,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 09:56:08,071 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:56:08,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:56:08,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:56:08,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:56:08,082 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2018-12-09 09:56:08,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:56:08,124 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-12-09 09:56:08,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:56:08,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-09 09:56:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:56:08,133 INFO L225 Difference]: With dead ends: 60 [2018-12-09 09:56:08,133 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 09:56:08,135 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:56:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 09:56:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-12-09 09:56:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 09:56:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2018-12-09 09:56:08,159 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 9 [2018-12-09 09:56:08,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:56:08,160 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2018-12-09 09:56:08,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:56:08,160 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2018-12-09 09:56:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 09:56:08,160 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:56:08,160 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:56:08,161 INFO L423 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 09:56:08,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:56:08,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1438395167, now seen corresponding path program 1 times [2018-12-09 09:56:08,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:56:08,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:56:08,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,162 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:56:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:56:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:56:08,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:56:08,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 09:56:08,182 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:56:08,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:56:08,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:56:08,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:56:08,183 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 3 states. [2018-12-09 09:56:08,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:56:08,201 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-12-09 09:56:08,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:56:08,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-09 09:56:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:56:08,202 INFO L225 Difference]: With dead ends: 35 [2018-12-09 09:56:08,202 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 09:56:08,202 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:56:08,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 09:56:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2018-12-09 09:56:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 09:56:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-12-09 09:56:08,205 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 9 [2018-12-09 09:56:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:56:08,205 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-12-09 09:56:08,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:56:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-12-09 09:56:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 09:56:08,206 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:56:08,206 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:56:08,206 INFO L423 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 09:56:08,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:56:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1640575335, now seen corresponding path program 1 times [2018-12-09 09:56:08,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:56:08,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:56:08,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,207 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:56:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:56:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:56:08,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:56:08,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 09:56:08,225 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:56:08,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:56:08,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:56:08,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:56:08,226 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 3 states. [2018-12-09 09:56:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:56:08,233 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-12-09 09:56:08,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:56:08,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 09:56:08,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:56:08,234 INFO L225 Difference]: With dead ends: 30 [2018-12-09 09:56:08,234 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 09:56:08,234 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:56:08,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 09:56:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-09 09:56:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 09:56:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-12-09 09:56:08,236 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2018-12-09 09:56:08,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:56:08,236 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-12-09 09:56:08,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:56:08,237 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-12-09 09:56:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 09:56:08,237 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:56:08,237 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:56:08,237 INFO L423 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 09:56:08,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:56:08,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1712546513, now seen corresponding path program 1 times [2018-12-09 09:56:08,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:56:08,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:56:08,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,238 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:56:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:56:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-09 09:56:08,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:56:08,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 09:56:08,291 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:56:08,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:56:08,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:56:08,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:56:08,292 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2018-12-09 09:56:08,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:56:08,322 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2018-12-09 09:56:08,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 09:56:08,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-12-09 09:56:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:56:08,323 INFO L225 Difference]: With dead ends: 28 [2018-12-09 09:56:08,324 INFO L226 Difference]: Without dead ends: 27 [2018-12-09 09:56:08,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-09 09:56:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-09 09:56:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-09 09:56:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 09:56:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-12-09 09:56:08,328 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 29 [2018-12-09 09:56:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:56:08,328 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-12-09 09:56:08,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:56:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-12-09 09:56:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 09:56:08,329 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:56:08,329 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:56:08,329 INFO L423 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 09:56:08,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:56:08,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1549334281, now seen corresponding path program 1 times [2018-12-09 09:56:08,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:56:08,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:56:08,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:56:08,331 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:56:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:56:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:56:08,378 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 09:56:08,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:56:08 BoogieIcfgContainer [2018-12-09 09:56:08,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 09:56:08,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 09:56:08,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 09:56:08,398 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 09:56:08,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:56:07" (3/4) ... [2018-12-09 09:56:08,400 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 09:56:08,426 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4b6d4747-674a-4778-9c11-f14f9c6bff59/bin-2019/utaipan/witness.graphml [2018-12-09 09:56:08,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 09:56:08,427 INFO L168 Benchmark]: Toolchain (without parser) took 896.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 956.0 MB in the beginning and 1.0 GB in the end (delta: -69.9 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. [2018-12-09 09:56:08,428 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:56:08,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.66 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:56:08,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.00 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:56:08,428 INFO L168 Benchmark]: Boogie Preprocessor took 46.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:56:08,429 INFO L168 Benchmark]: RCFGBuilder took 187.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-09 09:56:08,429 INFO L168 Benchmark]: TraceAbstraction took 487.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. [2018-12-09 09:56:08,429 INFO L168 Benchmark]: Witness Printer took 28.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:56:08,431 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.66 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.00 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 187.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 487.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. * Witness Printer took 28.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L47] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 VAL [length=1] [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; VAL [\result={3:0}, length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L47] RET, EXPR build_nondet_String() VAL [build_nondet_String()={3:0}] [L47] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 VAL [length=1] [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; VAL [\result={4:0}, length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L47] RET, EXPR build_nondet_String() VAL [build_nondet_String()={4:0}, build_nondet_String()={3:0}] [L47] CALL cstrncmp(build_nondet_String(),build_nondet_String(),__VERIFIER_nondet_int()) VAL [\old(n)=-2147483648, s1={3:0}, s2={4:0}] [L28] unsigned char uc1, uc2; VAL [\old(n)=-2147483648, n=-2147483648, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] [L30] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] [L33] n-- VAL [\old(n)=-2147483648, n=-2147483648, n--=-2147483648, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 6 error locations. UNSAFE Result, 0.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 121 SDtfs, 40 SDslu, 168 SDs, 0 SdLazy, 44 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1357 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...