./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/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 b51d3ff9a76866bd9c6637bca261a8433dd4524e ........................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-10-22 11:26:13,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:13,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:13,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:13,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:13,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:13,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:13,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:13,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:13,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:13,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:13,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:13,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:13,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:13,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:13,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:13,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:13,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:13,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:13,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:13,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:13,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:13,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:13,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:13,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:13,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:13,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:13,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:13,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:13,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:13,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:13,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:13,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:13,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:13,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:13,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:13,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:13,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:13,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:13,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:13,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:13,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-10-22 11:26:13,409 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:13,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:13,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:13,419 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:13,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:13,419 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:13,420 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:13,420 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:13,420 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:13,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:13,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:13,420 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:13,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:13,421 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:26:13,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:13,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:13,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:13,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:13,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:13,423 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 11:26:13,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:13,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:13,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:13,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:13,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:13,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:13,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:13,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:13,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:13,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:13,425 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:13,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:13,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:13,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:13,425 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> b51d3ff9a76866bd9c6637bca261a8433dd4524e [2019-10-22 11:26:13,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:13,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:13,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:13,477 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:13,478 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:13,478 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2019-10-22 11:26:13,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/data/725ad54f2/856a2e9c8fcc42379bbbe36e0ee76931/FLAG89577ecdb [2019-10-22 11:26:13,919 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:13,919 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2019-10-22 11:26:13,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/data/725ad54f2/856a2e9c8fcc42379bbbe36e0ee76931/FLAG89577ecdb [2019-10-22 11:26:13,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/data/725ad54f2/856a2e9c8fcc42379bbbe36e0ee76931 [2019-10-22 11:26:13,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:13,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:13,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:13,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:13,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:13,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:13" (1/1) ... [2019-10-22 11:26:13,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125a244b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:13, skipping insertion in model container [2019-10-22 11:26:13,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:13" (1/1) ... [2019-10-22 11:26:13,961 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:13,975 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:14,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:14,145 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:14,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:14,249 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:14,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14 WrapperNode [2019-10-22 11:26:14,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:14,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:14,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:14,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:14,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... [2019-10-22 11:26:14,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... [2019-10-22 11:26:14,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:14,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:14,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:14,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:14,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... [2019-10-22 11:26:14,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... [2019-10-22 11:26:14,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... [2019-10-22 11:26:14,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... [2019-10-22 11:26:14,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... [2019-10-22 11:26:14,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... [2019-10-22 11:26:14,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... [2019-10-22 11:26:14,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:14,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:14,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:14,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:14,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:14,539 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:14,539 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:26:14,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:14 BoogieIcfgContainer [2019-10-22 11:26:14,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:14,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:14,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:14,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:14,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:13" (1/3) ... [2019-10-22 11:26:14,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c6f6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:14, skipping insertion in model container [2019-10-22 11:26:14,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:14" (2/3) ... [2019-10-22 11:26:14,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c6f6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:14, skipping insertion in model container [2019-10-22 11:26:14,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:14" (3/3) ... [2019-10-22 11:26:14,547 INFO L109 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2019-10-22 11:26:14,556 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:14,562 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 11:26:14,573 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 11:26:14,596 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:14,597 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:14,597 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:14,597 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:14,597 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:14,597 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:14,597 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:14,597 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-22 11:26:14,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:26:14,617 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:14,618 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:26:14,620 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:14,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash 963948, now seen corresponding path program 1 times [2019-10-22 11:26:14,635 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:14,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246422484] [2019-10-22 11:26:14,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:14,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:14,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:14,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246422484] [2019-10-22 11:26:14,763 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:14,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:14,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355818356] [2019-10-22 11:26:14,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:14,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:14,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:14,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:14,788 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-22 11:26:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:14,811 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2019-10-22 11:26:14,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:14,813 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2019-10-22 11:26:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:14,824 INFO L225 Difference]: With dead ends: 47 [2019-10-22 11:26:14,827 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 11:26:14,831 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 11:26:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 11:26:14,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 11:26:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-22 11:26:14,868 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 4 [2019-10-22 11:26:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:14,868 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-22 11:26:14,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-22 11:26:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:26:14,869 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:14,869 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:26:14,870 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:14,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:14,870 INFO L82 PathProgramCache]: Analyzing trace with hash 925832983, now seen corresponding path program 1 times [2019-10-22 11:26:14,870 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:14,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219283493] [2019-10-22 11:26:14,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:14,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:14,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:14,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219283493] [2019-10-22 11:26:14,924 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:14,924 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 11:26:14,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641022998] [2019-10-22 11:26:14,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:14,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:14,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:14,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:14,928 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-10-22 11:26:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:14,944 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-10-22 11:26:14,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:14,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 11:26:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:14,945 INFO L225 Difference]: With dead ends: 20 [2019-10-22 11:26:14,946 INFO L226 Difference]: Without dead ends: 19 [2019-10-22 11:26:14,946 INFO L600 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 [2019-10-22 11:26:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-22 11:26:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-22 11:26:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 11:26:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-10-22 11:26:14,950 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 6 [2019-10-22 11:26:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:14,951 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-10-22 11:26:14,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-10-22 11:26:14,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:26:14,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:14,951 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:26:14,952 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:14,952 INFO L82 PathProgramCache]: Analyzing trace with hash 925833038, now seen corresponding path program 1 times [2019-10-22 11:26:14,952 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:14,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116446677] [2019-10-22 11:26:14,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:14,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:14,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:14,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116446677] [2019-10-22 11:26:14,976 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:14,977 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 11:26:14,977 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057311093] [2019-10-22 11:26:14,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:14,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:14,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:14,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:14,978 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2019-10-22 11:26:15,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:15,098 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2019-10-22 11:26:15,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:15,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 11:26:15,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:15,100 INFO L225 Difference]: With dead ends: 34 [2019-10-22 11:26:15,100 INFO L226 Difference]: Without dead ends: 33 [2019-10-22 11:26:15,101 INFO L600 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 [2019-10-22 11:26:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-22 11:26:15,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2019-10-22 11:26:15,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 11:26:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2019-10-22 11:26:15,107 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 6 [2019-10-22 11:26:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:15,108 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2019-10-22 11:26:15,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2019-10-22 11:26:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:26:15,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:15,109 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:15,109 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:15,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:15,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1363948532, now seen corresponding path program 1 times [2019-10-22 11:26:15,110 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:15,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174029199] [2019-10-22 11:26:15,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:15,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:15,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:15,136 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174029199] [2019-10-22 11:26:15,136 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:15,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:15,136 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180332116] [2019-10-22 11:26:15,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:15,137 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:15,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:15,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:15,137 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 3 states. [2019-10-22 11:26:15,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:15,162 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2019-10-22 11:26:15,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:15,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 11:26:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:15,165 INFO L225 Difference]: With dead ends: 30 [2019-10-22 11:26:15,165 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 11:26:15,165 INFO L600 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 [2019-10-22 11:26:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 11:26:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 11:26:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 11:26:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-10-22 11:26:15,175 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 7 [2019-10-22 11:26:15,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:15,176 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-10-22 11:26:15,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2019-10-22 11:26:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:26:15,176 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:15,176 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:15,177 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:15,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1363946834, now seen corresponding path program 1 times [2019-10-22 11:26:15,177 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:15,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69172223] [2019-10-22 11:26:15,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:15,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:15,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:15,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69172223] [2019-10-22 11:26:15,219 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:15,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:15,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408977032] [2019-10-22 11:26:15,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:15,220 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:15,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:15,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:15,221 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 4 states. [2019-10-22 11:26:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:15,267 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2019-10-22 11:26:15,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:15,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 11:26:15,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:15,268 INFO L225 Difference]: With dead ends: 50 [2019-10-22 11:26:15,268 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 11:26:15,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 11:26:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-10-22 11:26:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-22 11:26:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2019-10-22 11:26:15,276 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 7 [2019-10-22 11:26:15,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:15,276 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2019-10-22 11:26:15,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2019-10-22 11:26:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:26:15,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:15,277 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:15,277 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:15,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:15,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1488503985, now seen corresponding path program 1 times [2019-10-22 11:26:15,278 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:15,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114390309] [2019-10-22 11:26:15,279 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:15,279 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:15,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:15,344 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:26:15,344 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:15,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:15 BoogieIcfgContainer [2019-10-22 11:26:15,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:15,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:15,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:15,361 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:15,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:14" (3/4) ... [2019-10-22 11:26:15,363 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:15,402 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f653f8d1-176a-4038-94b7-df5efedc9f95/bin/utaipan/witness.graphml [2019-10-22 11:26:15,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:15,405 INFO L168 Benchmark]: Toolchain (without parser) took 1461.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 951.2 MB in the beginning and 1.0 GB in the end (delta: -85.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:15,405 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:15,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:15,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:15,406 INFO L168 Benchmark]: Boogie Preprocessor took 21.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:15,407 INFO L168 Benchmark]: RCFGBuilder took 229.89 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:15,407 INFO L168 Benchmark]: TraceAbstraction took 819.17 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: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:15,408 INFO L168 Benchmark]: Witness Printer took 42.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:15,410 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 229.89 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 819.17 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: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Witness Printer took 42.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y, n; [L15] n = __VERIFIER_nondet_int() [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] COND TRUE x >= 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] COND FALSE !(y >= 0 && __VERIFIER_nondet_int() != 0) [L22] EXPR x - 1 [L22] x = x - 1 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] COND TRUE y <= n && __VERIFIER_nondet_int() != 0 [L24] y + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 67 SDslu, 28 SDs, 0 SdLazy, 43 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=5, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 357 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...