./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i --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_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 058f2b919df241022a2d1e4bdbdaa26cd8e08c13 ............................................................................................................................................................................................................................................................... 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 08:58:27,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:27,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:27,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:27,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:27,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:27,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:27,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:27,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:27,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:27,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:27,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:27,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:27,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:27,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:27,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:27,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:27,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:27,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:27,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:27,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:27,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:27,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:27,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:27,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:27,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:27,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:27,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:27,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:27,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:27,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:27,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:27,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:27,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:27,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:27,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:27,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:27,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:27,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:27,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:27,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:27,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:58:27,189 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:27,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:27,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:27,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:27,191 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:27,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:27,191 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:27,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:27,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:27,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:58:27,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:58:27,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:58:27,192 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:58:27,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:27,193 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:27,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:58:27,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:27,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:27,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:58:27,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:58:27,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:58:27,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:27,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:58:27,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:58:27,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:27,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:58:27,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:58:27,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer 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 -> Automizer 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 -> 058f2b919df241022a2d1e4bdbdaa26cd8e08c13 [2019-10-22 08:58:27,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:27,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:27,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:27,242 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:27,242 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:27,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/../../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i [2019-10-22 08:58:27,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/data/7820e9a66/5bc17138ef484970a706c1cecda291be/FLAGe94d15bba [2019-10-22 08:58:27,716 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:27,716 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i [2019-10-22 08:58:27,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/data/7820e9a66/5bc17138ef484970a706c1cecda291be/FLAGe94d15bba [2019-10-22 08:58:28,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/data/7820e9a66/5bc17138ef484970a706c1cecda291be [2019-10-22 08:58:28,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:28,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:28,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:28,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:28,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:28,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db5c5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28, skipping insertion in model container [2019-10-22 08:58:28,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,086 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:28,113 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:28,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:28,461 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:28,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:28,572 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:28,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28 WrapperNode [2019-10-22 08:58:28,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:28,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:28,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:28,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:28,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:28,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:28,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:28,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:28,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... [2019-10-22 08:58:28,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:28,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:28,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:28,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:28,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/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 08:58:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:58:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 08:58:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:28,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:28,929 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:28,929 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 08:58:28,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:28 BoogieIcfgContainer [2019-10-22 08:58:28,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:28,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:58:28,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:58:28,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:58:28,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:58:28" (1/3) ... [2019-10-22 08:58:28,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb29d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:28, skipping insertion in model container [2019-10-22 08:58:28,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:28" (2/3) ... [2019-10-22 08:58:28,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb29d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:28, skipping insertion in model container [2019-10-22 08:58:28,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:28" (3/3) ... [2019-10-22 08:58:28,938 INFO L109 eAbstractionObserver]: Analyzing ICFG PrefixDecrement.i [2019-10-22 08:58:28,946 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:58:28,953 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 08:58:28,964 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 08:58:29,004 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:29,004 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:58:29,005 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:29,005 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:29,005 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:29,005 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:29,005 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:29,005 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-10-22 08:58:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 08:58:29,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:29,044 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 08:58:29,046 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2019-10-22 08:58:29,061 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:29,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171972765] [2019-10-22 08:58:29,062 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:29,062 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:29,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:29,218 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 08:58:29,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171972765] [2019-10-22 08:58:29,219 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:29,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:58:29,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051723249] [2019-10-22 08:58:29,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:58:29,227 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:29,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:58:29,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:58:29,243 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-10-22 08:58:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:29,269 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-10-22 08:58:29,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:58:29,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 08:58:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:29,285 INFO L225 Difference]: With dead ends: 9 [2019-10-22 08:58:29,285 INFO L226 Difference]: Without dead ends: 5 [2019-10-22 08:58:29,288 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 08:58:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-10-22 08:58:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-10-22 08:58:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 08:58:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2019-10-22 08:58:29,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 3 [2019-10-22 08:58:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:29,318 INFO L462 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2019-10-22 08:58:29,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:58:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2019-10-22 08:58:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:58:29,319 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:29,319 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:58:29,319 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:29,320 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2019-10-22 08:58:29,320 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:29,320 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123409066] [2019-10-22 08:58:29,320 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:29,320 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:29,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:29,373 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:29,374 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:58:29,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:58:29 BoogieIcfgContainer [2019-10-22 08:58:29,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:58:29,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:29,401 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:29,402 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:29,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:28" (3/4) ... [2019-10-22 08:58:29,404 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:58:29,447 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a852d9fe-8fab-43fc-b3db-9735ef3068f5/bin/uautomizer/witness.graphml [2019-10-22 08:58:29,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:29,450 INFO L168 Benchmark]: Toolchain (without parser) took 1379.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -130.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:29,450 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:29,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:29,452 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:29,453 INFO L168 Benchmark]: Boogie Preprocessor took 21.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:29,453 INFO L168 Benchmark]: RCFGBuilder took 294.13 ms. Allocated memory is still 1.2 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 08:58:29,454 INFO L168 Benchmark]: TraceAbstraction took 469.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:29,454 INFO L168 Benchmark]: Witness Printer took 46.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:29,457 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 502.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 294.13 ms. Allocated memory is still 1.2 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 469.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Witness Printer took 46.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 333]: integer overflow possible integer overflow possible We found a FailurePath: [L332] int x = -2147483647 - 1; [L333] --x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...