./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-VMCAI2004-Ex2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f6fb2bb1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-VMCAI2004-Ex2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f679dfb8dfa1325a053f9e19d78c019079eb5e5e ........................................................................................................................................................................................................................................................... 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-f6fb2bb [2019-11-19 19:53:13,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 19:53:13,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 19:53:13,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 19:53:13,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 19:53:13,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 19:53:13,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 19:53:13,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 19:53:13,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 19:53:13,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 19:53:13,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 19:53:13,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 19:53:13,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 19:53:13,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 19:53:13,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 19:53:13,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 19:53:13,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 19:53:13,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 19:53:13,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 19:53:13,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 19:53:13,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 19:53:13,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 19:53:13,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 19:53:13,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 19:53:13,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 19:53:13,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 19:53:13,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 19:53:13,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 19:53:13,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 19:53:13,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 19:53:13,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 19:53:13,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 19:53:13,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 19:53:13,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 19:53:13,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 19:53:13,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 19:53:13,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 19:53:13,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 19:53:13,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 19:53:13,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 19:53:13,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 19:53:13,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-19 19:53:13,810 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 19:53:13,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 19:53:13,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 19:53:13,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 19:53:13,813 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 19:53:13,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 19:53:13,813 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 19:53:13,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 19:53:13,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 19:53:13,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 19:53:13,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 19:53:13,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 19:53:13,815 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-19 19:53:13,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 19:53:13,816 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 19:53:13,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 19:53:13,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 19:53:13,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 19:53:13,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 19:53:13,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 19:53:13,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:53:13,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 19:53:13,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 19:53:13,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 19:53:13,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 19:53:13,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 19:53:13,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 19:53:13,819 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> f679dfb8dfa1325a053f9e19d78c019079eb5e5e [2019-11-19 19:53:14,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 19:53:14,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 19:53:14,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 19:53:14,119 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 19:53:14,120 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 19:53:14,120 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-VMCAI2004-Ex2.c [2019-11-19 19:53:14,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15b089022/89ec626a6f014be0b85b6d19b3301108/FLAG56b84e113 [2019-11-19 19:53:14,653 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 19:53:14,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-VMCAI2004-Ex2.c [2019-11-19 19:53:14,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15b089022/89ec626a6f014be0b85b6d19b3301108/FLAG56b84e113 [2019-11-19 19:53:15,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15b089022/89ec626a6f014be0b85b6d19b3301108 [2019-11-19 19:53:15,015 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 19:53:15,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 19:53:15,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 19:53:15,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 19:53:15,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 19:53:15,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31e0893e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15, skipping insertion in model container [2019-11-19 19:53:15,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,034 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 19:53:15,057 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 19:53:15,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:53:15,274 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 19:53:15,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:53:15,296 INFO L192 MainTranslator]: Completed translation [2019-11-19 19:53:15,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15 WrapperNode [2019-11-19 19:53:15,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 19:53:15,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 19:53:15,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 19:53:15,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 19:53:15,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 19:53:15,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 19:53:15,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 19:53:15,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 19:53:15,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... [2019-11-19 19:53:15,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 19:53:15,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 19:53:15,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 19:53:15,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 19:53:15,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 19:53:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 19:53:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 19:53:15,613 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 19:53:15,615 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-19 19:53:15,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:15 BoogieIcfgContainer [2019-11-19 19:53:15,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 19:53:15,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 19:53:15,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 19:53:15,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 19:53:15,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:15" (1/3) ... [2019-11-19 19:53:15,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da1a486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:15, skipping insertion in model container [2019-11-19 19:53:15,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15" (2/3) ... [2019-11-19 19:53:15,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da1a486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:15, skipping insertion in model container [2019-11-19 19:53:15,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:15" (3/3) ... [2019-11-19 19:53:15,623 INFO L109 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-VMCAI2004-Ex2.c [2019-11-19 19:53:15,633 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 19:53:15,639 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-19 19:53:15,650 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-19 19:53:15,674 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 19:53:15,674 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 19:53:15,674 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 19:53:15,674 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 19:53:15,674 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 19:53:15,674 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 19:53:15,675 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 19:53:15,675 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 19:53:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-19 19:53:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-19 19:53:15,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:15,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-19 19:53:15,696 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:15,702 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-19 19:53:15,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:15,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908344900] [2019-11-19 19:53:15,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:15,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908344900] [2019-11-19 19:53:15,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:53:15,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 19:53:15,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982031304] [2019-11-19 19:53:15,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 19:53:15,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:15,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 19:53:15,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 19:53:15,868 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-19 19:53:15,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:15,930 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-19 19:53:15,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 19:53:15,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-19 19:53:15,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:15,944 INFO L225 Difference]: With dead ends: 18 [2019-11-19 19:53:15,945 INFO L226 Difference]: Without dead ends: 8 [2019-11-19 19:53:15,949 INFO L630 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 [2019-11-19 19:53:15,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-19 19:53:16,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-19 19:53:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-19 19:53:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-19 19:53:16,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2019-11-19 19:53:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:16,026 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-19 19:53:16,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 19:53:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-19 19:53:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-19 19:53:16,027 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:16,027 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-19 19:53:16,028 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:16,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:16,029 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-19 19:53:16,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:16,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016003710] [2019-11-19 19:53:16,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:53:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:53:16,065 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:53:16,065 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 19:53:16,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:53:16 BoogieIcfgContainer [2019-11-19 19:53:16,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 19:53:16,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 19:53:16,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 19:53:16,080 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 19:53:16,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:15" (3/4) ... [2019-11-19 19:53:16,083 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 19:53:16,117 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 19:53:16,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 19:53:16,120 INFO L168 Benchmark]: Toolchain (without parser) took 1102.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:16,121 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:53:16,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.41 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:16,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.97 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:53:16,123 INFO L168 Benchmark]: Boogie Preprocessor took 75.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -201.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:16,124 INFO L168 Benchmark]: RCFGBuilder took 210.07 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:16,125 INFO L168 Benchmark]: TraceAbstraction took 462.67 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:16,126 INFO L168 Benchmark]: Witness Printer took 37.69 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:16,133 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 279.41 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.97 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -201.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 210.07 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 462.67 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Witness Printer took 37.69 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x; [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x >= 0 [L18] -2*x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 5 SDslu, 3 SDs, 0 SdLazy, 9 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=14occurred 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, 8 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...