./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/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 6ff697c57265298ce2261966fa58c440777fc865 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 21:24:22,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:24:22,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:24:22,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:24:22,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:24:22,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:24:22,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:24:22,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:24:22,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:24:22,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:24:22,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:24:22,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:24:22,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:24:22,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:24:22,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:24:22,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:24:22,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:24:22,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:24:22,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:24:22,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:24:22,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:24:22,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:24:22,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:24:22,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:24:22,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:24:22,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:24:22,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:24:22,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:24:22,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:24:22,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:24:22,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:24:22,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:24:22,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:24:22,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:24:22,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:24:22,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:24:22,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:24:22,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:24:22,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:24:22,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:24:22,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:24:22,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-12-07 21:24:22,264 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:24:22,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:24:22,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:24:22,265 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:24:22,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:24:22,265 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:24:22,265 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:24:22,265 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:24:22,265 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:24:22,265 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:24:22,266 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:24:22,266 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:24:22,266 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:24:22,266 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:24:22,266 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:24:22,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:24:22,267 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 21:24:22,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:24:22,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:24:22,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:24:22,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:24:22,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:24:22,267 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 21:24:22,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:24:22,268 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:24:22,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:24:22,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:24:22,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:24:22,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:24:22,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:24:22,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:24:22,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:24:22,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:24:22,269 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:24:22,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:24:22,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:24:22,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:24:22,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:24:22,269 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/run_dir_6976ed48-b300-40da-b609-19804e166d61/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 -> 6ff697c57265298ce2261966fa58c440777fc865 [2019-12-07 21:24:22,367 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:24:22,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:24:22,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:24:22,378 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:24:22,379 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:24:22,379 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c [2019-12-07 21:24:22,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/data/fc1f73551/aa015e6655ed4830863a06aa11d3219f/FLAG6d1de3afb [2019-12-07 21:24:22,789 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:24:22,789 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c [2019-12-07 21:24:22,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/data/fc1f73551/aa015e6655ed4830863a06aa11d3219f/FLAG6d1de3afb [2019-12-07 21:24:23,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/data/fc1f73551/aa015e6655ed4830863a06aa11d3219f [2019-12-07 21:24:23,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:24:23,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:24:23,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:24:23,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:24:23,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:24:23,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb40537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23, skipping insertion in model container [2019-12-07 21:24:23,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:24:23,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:24:23,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:24:23,314 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:24:23,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:24:23,372 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:24:23,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23 WrapperNode [2019-12-07 21:24:23,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:24:23,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:24:23,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:24:23,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:24:23,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:24:23,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:24:23,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:24:23,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:24:23,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... [2019-12-07 21:24:23,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:24:23,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:24:23,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:24:23,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:24:23,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/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 [2019-12-07 21:24:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:24:23,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:24:24,144 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:24:24,144 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-07 21:24:24,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:24:24 BoogieIcfgContainer [2019-12-07 21:24:24,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:24:24,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:24:24,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:24:24,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:24:24,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:24:23" (1/3) ... [2019-12-07 21:24:24,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f00a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:24:24, skipping insertion in model container [2019-12-07 21:24:24,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:24:23" (2/3) ... [2019-12-07 21:24:24,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f00a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:24:24, skipping insertion in model container [2019-12-07 21:24:24,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:24:24" (3/3) ... [2019-12-07 21:24:24,150 INFO L109 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig2.c [2019-12-07 21:24:24,157 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:24:24,162 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 21:24:24,169 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 21:24:24,185 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:24:24,185 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:24:24,185 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:24:24,185 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:24:24,185 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:24:24,185 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:24:24,185 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:24:24,185 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:24:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-07 21:24:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 21:24:24,199 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:24:24,200 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 21:24:24,200 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 21:24:24,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:24:24,205 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 21:24:24,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:24:24,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182650078] [2019-12-07 21:24:24,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:24:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:24:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:24:24,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182650078] [2019-12-07 21:24:24,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:24:24,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 21:24:24,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914008785] [2019-12-07 21:24:24,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:24:24,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:24:24,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:24:24,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:24:24,317 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-12-07 21:24:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:24:24,347 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-12-07 21:24:24,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:24:24,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 21:24:24,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:24:24,354 INFO L225 Difference]: With dead ends: 18 [2019-12-07 21:24:24,354 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 21:24:24,356 INFO L630 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 [2019-12-07 21:24:24,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 21:24:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 21:24:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 21:24:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 21:24:24,378 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 3 [2019-12-07 21:24:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:24:24,378 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 21:24:24,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:24:24,379 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-07 21:24:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 21:24:24,379 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:24:24,379 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 21:24:24,379 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 21:24:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:24:24,379 INFO L82 PathProgramCache]: Analyzing trace with hash 957349, now seen corresponding path program 1 times [2019-12-07 21:24:24,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:24:24,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903205297] [2019-12-07 21:24:24,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:24:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:24:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:24:24,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903205297] [2019-12-07 21:24:24,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:24:24,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 21:24:24,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57800194] [2019-12-07 21:24:24,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:24:24,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:24:24,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:24:24,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:24:24,393 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-12-07 21:24:24,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:24:24,413 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-12-07 21:24:24,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:24:24,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 21:24:24,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:24:24,415 INFO L225 Difference]: With dead ends: 25 [2019-12-07 21:24:24,415 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 21:24:24,416 INFO L630 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 [2019-12-07 21:24:24,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 21:24:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2019-12-07 21:24:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 21:24:24,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-12-07 21:24:24,419 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 4 [2019-12-07 21:24:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:24:24,420 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-12-07 21:24:24,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:24:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-12-07 21:24:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 21:24:24,420 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:24:24,420 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 21:24:24,420 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 21:24:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:24:24,421 INFO L82 PathProgramCache]: Analyzing trace with hash 935027559, now seen corresponding path program 1 times [2019-12-07 21:24:24,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:24:24,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118257077] [2019-12-07 21:24:24,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:24:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:24:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:24:24,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118257077] [2019-12-07 21:24:24,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:24:24,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 21:24:24,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102014402] [2019-12-07 21:24:24,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:24:24,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:24:24,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:24:24,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:24:24,501 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 3 states. [2019-12-07 21:24:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:24:24,519 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-12-07 21:24:24,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:24:24,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 21:24:24,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:24:24,520 INFO L225 Difference]: With dead ends: 22 [2019-12-07 21:24:24,520 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 21:24:24,521 INFO L630 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 [2019-12-07 21:24:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 21:24:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-12-07 21:24:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 21:24:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-12-07 21:24:24,524 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6 [2019-12-07 21:24:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:24:24,524 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-12-07 21:24:24,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:24:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-12-07 21:24:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 21:24:24,524 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:24:24,525 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:24:24,525 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 21:24:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:24:24,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1078916483, now seen corresponding path program 1 times [2019-12-07 21:24:24,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:24:24,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838442378] [2019-12-07 21:24:24,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:24:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:24:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:24:24,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838442378] [2019-12-07 21:24:24,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:24:24,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:24:24,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369446504] [2019-12-07 21:24:24,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:24:24,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:24:24,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:24:24,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:24:24,574 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2019-12-07 21:24:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:24:24,597 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-12-07 21:24:24,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:24:24,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 21:24:24,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:24:24,599 INFO L225 Difference]: With dead ends: 20 [2019-12-07 21:24:24,599 INFO L226 Difference]: Without dead ends: 19 [2019-12-07 21:24:24,599 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:24:24,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-07 21:24:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-12-07 21:24:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 21:24:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-12-07 21:24:24,603 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 7 [2019-12-07 21:24:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:24:24,603 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-12-07 21:24:24,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:24:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-12-07 21:24:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 21:24:24,604 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:24:24,604 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:24:24,604 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 21:24:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:24:24,605 INFO L82 PathProgramCache]: Analyzing trace with hash -620780291, now seen corresponding path program 1 times [2019-12-07 21:24:24,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:24:24,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283908570] [2019-12-07 21:24:24,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:24:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:24:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:24:24,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283908570] [2019-12-07 21:24:24,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:24:24,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:24:24,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153239603] [2019-12-07 21:24:24,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:24:24,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:24:24,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:24:24,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:24:24,657 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 4 states. [2019-12-07 21:24:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:24:24,675 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-12-07 21:24:24,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:24:24,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 21:24:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:24:24,676 INFO L225 Difference]: With dead ends: 27 [2019-12-07 21:24:24,676 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 21:24:24,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:24:24,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 21:24:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2019-12-07 21:24:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 21:24:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-07 21:24:24,679 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2019-12-07 21:24:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:24:24,679 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-07 21:24:24,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:24:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-07 21:24:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 21:24:24,680 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:24:24,680 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:24:24,680 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 21:24:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:24:24,681 INFO L82 PathProgramCache]: Analyzing trace with hash -620774109, now seen corresponding path program 1 times [2019-12-07 21:24:24,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:24:24,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215540881] [2019-12-07 21:24:24,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:24:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:24:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:24:24,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215540881] [2019-12-07 21:24:24,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:24:24,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:24:24,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489468703] [2019-12-07 21:24:24,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:24:24,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:24:24,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:24:24,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:24:24,715 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-07 21:24:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:24:24,735 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-12-07 21:24:24,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:24:24,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 21:24:24,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:24:24,735 INFO L225 Difference]: With dead ends: 22 [2019-12-07 21:24:24,736 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 21:24:24,736 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:24:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 21:24:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-12-07 21:24:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 21:24:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-12-07 21:24:24,738 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 8 [2019-12-07 21:24:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:24:24,739 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-12-07 21:24:24,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:24:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-12-07 21:24:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 21:24:24,739 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:24:24,739 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:24:24,739 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 21:24:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:24:24,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1751613633, now seen corresponding path program 1 times [2019-12-07 21:24:24,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:24:24,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714153163] [2019-12-07 21:24:24,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:24:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:24:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:24:24,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714153163] [2019-12-07 21:24:24,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495417021] [2019-12-07 21:24:24,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:24:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:24:24,825 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 21:24:24,828 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:24:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:24:24,868 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:24:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:24:24,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:24:24,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 2] total 7 [2019-12-07 21:24:24,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917647656] [2019-12-07 21:24:24,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:24:24,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:24:24,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:24:24,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-12-07 21:24:24,886 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 4 states. [2019-12-07 21:24:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:24:24,910 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-12-07 21:24:24,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:24:24,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 21:24:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:24:24,911 INFO L225 Difference]: With dead ends: 25 [2019-12-07 21:24:24,911 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 21:24:24,912 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-12-07 21:24:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 21:24:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 21:24:24,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 21:24:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-12-07 21:24:24,915 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2019-12-07 21:24:24,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:24:24,916 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-12-07 21:24:24,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:24:24,916 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-12-07 21:24:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 21:24:24,916 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:24:24,916 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:24:25,117 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:24:25,118 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 21:24:25,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:24:25,118 INFO L82 PathProgramCache]: Analyzing trace with hash 430602687, now seen corresponding path program 1 times [2019-12-07 21:24:25,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:24:25,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755627717] [2019-12-07 21:24:25,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:24:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:24:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:24:25,246 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 21:24:25,246 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:24:25,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:24:25 BoogieIcfgContainer [2019-12-07 21:24:25,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:24:25,263 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:24:25,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:24:25,264 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:24:25,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:24:24" (3/4) ... [2019-12-07 21:24:25,265 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 21:24:25,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6976ed48-b300-40da-b609-19804e166d61/bin/utaipan/witness.graphml [2019-12-07 21:24:25,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:24:25,306 INFO L168 Benchmark]: Toolchain (without parser) took 2132.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -133.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:24:25,306 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:24:25,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -156.0 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:24:25,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.74 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:24:25,307 INFO L168 Benchmark]: Boogie Preprocessor took 19.43 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:24:25,308 INFO L168 Benchmark]: RCFGBuilder took 718.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 958.0 MB in the end (delta: 136.7 MB). Peak memory consumption was 136.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:24:25,308 INFO L168 Benchmark]: TraceAbstraction took 1117.12 ms. Allocated memory is still 1.1 GB. Free memory was 958.0 MB in the beginning and 1.1 GB in the end (delta: -120.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:24:25,309 INFO L168 Benchmark]: Witness Printer took 40.71 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:24:25,311 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 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 199.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -156.0 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.74 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.43 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 718.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 958.0 MB in the end (delta: 136.7 MB). Peak memory consumption was 136.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1117.12 ms. Allocated memory is still 1.1 GB. Free memory was 958.0 MB in the beginning and 1.1 GB in the end (delta: -120.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 40.71 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 81]: integer overflow possible integer overflow possible We found a FailurePath: [L53] int d = 1; [L54] int x = __VERIFIER_nondet_int(); [L56] COND TRUE __VERIFIER_nondet_int() [L57] EXPR d - 1 [L57] d = d - 1 [L61] COND TRUE __VERIFIER_nondet_int() [L18] int y = __VERIFIER_nondet_int(); [L19] COND TRUE __VERIFIER_nondet_int() [L20] COND FALSE !(__VERIFIER_nondet_int()) [L27] COND TRUE __VERIFIER_nondet_int() [L28] y = 2 [L48] return y; [L64] COND TRUE __VERIFIER_nondet_int() [L18] int y = __VERIFIER_nondet_int(); [L19] COND TRUE __VERIFIER_nondet_int() [L20] COND TRUE __VERIFIER_nondet_int() [L21] COND TRUE __VERIFIER_nondet_int() [L22] y = 0 [L48] return y; [L67] COND FALSE !(__VERIFIER_nondet_int()) [L70] COND TRUE __VERIFIER_nondet_int() [L18] int y = __VERIFIER_nondet_int(); [L19] COND FALSE !(__VERIFIER_nondet_int()) [L34] COND FALSE !(__VERIFIER_nondet_int()) [L41] COND TRUE __VERIFIER_nondet_int() [L42] y = 6 [L48] return y; [L76] COND TRUE __VERIFIER_nondet_int() [L77] EXPR d - 1 [L77] d = d - 1 [L80] COND TRUE x > 0 [L81] x - d - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 6 error locations. Result: UNSAFE, OverallTime: 1.0s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 72 SDslu, 28 SDs, 0 SdLazy, 115 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, 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, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1816 SizeOfPredicates, 0 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 2/6 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...