./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI --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 0.2.0-7b2dab5 [2021-10-11 02:27:33,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:33,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:33,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:33,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:33,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:33,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:33,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:33,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:33,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:33,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:33,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:33,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:33,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:33,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:33,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:33,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:33,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:33,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:33,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:33,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:33,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:33,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:33,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:33,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:33,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:33,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:33,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:33,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:33,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:33,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:33,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:33,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:33,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:33,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:33,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:33,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:33,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:33,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:33,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:33,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:33,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:27:33,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:33,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:33,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:33,731 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:33,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:33,732 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:33,732 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:33,732 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:33,739 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:33,739 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:33,740 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:33,741 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:33,741 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:33,741 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:33,741 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:33,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:33,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:33,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:33,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:33,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:33,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:33,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:33,744 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:27:33,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:33,744 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:33,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:33,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:33,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:33,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:33,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:33,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:33,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:33,746 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:33,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:33,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:33,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:33,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:33,747 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 [2021-10-11 02:27:34,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:34,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:34,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:34,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:34,098 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:34,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-10-11 02:27:34,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/data/db6b12589/0c6b4c034c8b4473aea085ee8f7553c4/FLAGe54e7e00c [2021-10-11 02:27:34,729 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:34,730 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-10-11 02:27:34,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/data/db6b12589/0c6b4c034c8b4473aea085ee8f7553c4/FLAGe54e7e00c [2021-10-11 02:27:35,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/data/db6b12589/0c6b4c034c8b4473aea085ee8f7553c4 [2021-10-11 02:27:35,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:35,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:35,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:35,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:35,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:35,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ab28d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35, skipping insertion in model container [2021-10-11 02:27:35,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:35,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:35,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:35,322 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:35,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:35,351 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:35,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35 WrapperNode [2021-10-11 02:27:35,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:35,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:35,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:35,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:35,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:35,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:35,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:35,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:35,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... [2021-10-11 02:27:35,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:35,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:35,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:35,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:35,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:27:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:27:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:35,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:27:36,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:36,052 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-11 02:27:36,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:36 BoogieIcfgContainer [2021-10-11 02:27:36,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:36,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:36,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:36,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:36,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:35" (1/3) ... [2021-10-11 02:27:36,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d06fa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:36, skipping insertion in model container [2021-10-11 02:27:36,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:35" (2/3) ... [2021-10-11 02:27:36,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d06fa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:36, skipping insertion in model container [2021-10-11 02:27:36,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:36" (3/3) ... [2021-10-11 02:27:36,066 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncmp.c [2021-10-11 02:27:36,080 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:36,083 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2021-10-11 02:27:36,094 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-11 02:27:36,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:36,118 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:36,118 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:36,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:36,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:36,119 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:36,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:36,119 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-10-11 02:27:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:27:36,146 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:27:36,152 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:36,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,158 INFO L82 PathProgramCache]: Analyzing trace with hash 4070, now seen corresponding path program 1 times [2021-10-11 02:27:36,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670649086] [2021-10-11 02:27:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670649086] [2021-10-11 02:27:36,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:36,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653024530] [2021-10-11 02:27:36,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:36,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:36,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:36,335 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2021-10-11 02:27:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,387 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-10-11 02:27:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:36,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:27:36,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,399 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:27:36,399 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:27:36,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:27:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:27:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:27:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-11 02:27:36,437 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 2 [2021-10-11 02:27:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,438 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-11 02:27:36,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-11 02:27:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:27:36,438 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:27:36,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:36,439 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:36,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash 126212, now seen corresponding path program 1 times [2021-10-11 02:27:36,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524084235] [2021-10-11 02:27:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524084235] [2021-10-11 02:27:36,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:36,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832043188] [2021-10-11 02:27:36,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:36,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:36,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:36,472 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2021-10-11 02:27:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,498 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-11 02:27:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:36,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:27:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,499 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:27:36,499 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:27:36,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:27:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 02:27:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:27:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-11 02:27:36,505 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 3 [2021-10-11 02:27:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,505 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-11 02:27:36,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-11 02:27:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:36,506 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:36,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:36,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:36,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,508 INFO L82 PathProgramCache]: Analyzing trace with hash 121291142, now seen corresponding path program 1 times [2021-10-11 02:27:36,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899985267] [2021-10-11 02:27:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899985267] [2021-10-11 02:27:36,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:36,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304932984] [2021-10-11 02:27:36,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:36,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:36,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:36,543 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2021-10-11 02:27:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,584 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-11 02:27:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:36,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:27:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,587 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:27:36,587 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:27:36,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:27:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:27:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:27:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-11 02:27:36,592 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2021-10-11 02:27:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,593 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-11 02:27:36,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-11 02:27:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:36,593 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:36,594 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1647522889, now seen corresponding path program 1 times [2021-10-11 02:27:36,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764886276] [2021-10-11 02:27:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764886276] [2021-10-11 02:27:36,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:36,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15121169] [2021-10-11 02:27:36,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,726 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2021-10-11 02:27:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,757 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-11 02:27:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:27:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,759 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:27:36,759 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:27:36,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:27:36,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:27:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:27:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:27:36,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2021-10-11 02:27:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,765 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:27:36,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:27:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:27:36,767 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:36,767 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,769 INFO L82 PathProgramCache]: Analyzing trace with hash 466398071, now seen corresponding path program 1 times [2021-10-11 02:27:36,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916792572] [2021-10-11 02:27:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:36,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:36,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:36,847 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:27:36,848 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:36,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:27:36,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:36 BoogieIcfgContainer [2021-10-11 02:27:36,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:36,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:36,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:36,879 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:36,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:36" (3/4) ... [2021-10-11 02:27:36,882 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:27:36,927 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cdf5ae-163c-4bfa-bc96-a6e5185cd5f2/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:36,927 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:36,929 INFO L168 Benchmark]: Toolchain (without parser) took 1848.31 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 62.1 MB in the beginning and 75.2 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:36,930 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 73.4 MB. Free memory was 32.2 MB in the beginning and 32.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:36,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.58 ms. Allocated memory is still 94.4 MB. Free memory was 61.9 MB in the beginning and 70.7 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:36,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.90 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:36,933 INFO L168 Benchmark]: Boogie Preprocessor took 29.74 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 67.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:36,933 INFO L168 Benchmark]: RCFGBuilder took 626.89 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 69.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:36,934 INFO L168 Benchmark]: TraceAbstraction took 820.65 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 68.8 MB in the beginning and 77.3 MB in the end (delta: -8.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:36,935 INFO L168 Benchmark]: Witness Printer took 48.85 ms. Allocated memory is still 115.3 MB. Free memory was 77.3 MB in the beginning and 75.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:36,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 73.4 MB. Free memory was 32.2 MB in the beginning and 32.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.58 ms. Allocated memory is still 94.4 MB. Free memory was 61.9 MB in the beginning and 70.7 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.90 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.74 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 67.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 626.89 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 69.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 820.65 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 68.8 MB in the beginning and 77.3 MB in the end (delta: -8.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Witness Printer took 48.85 ms. Allocated memory is still 115.3 MB. Free memory was 77.3 MB in the beginning and 75.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int length = __VERIFIER_nondet_int(); [L14] COND FALSE !(length < 1) [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L13] int length = __VERIFIER_nondet_int(); [L14] COND FALSE !(length < 1) [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L28] unsigned char uc1, uc2; [L30] COND FALSE !(n == 0) [L33] n-- - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 58 SDslu, 17 SDs, 0 SdLazy, 39 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! Received shutdown request...