./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Waldkirch.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 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/Waldkirch.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 7a10ccd42123994759390bf7d921442c28e0623a ...................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:29:48,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:29:48,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:29:48,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:29:48,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:29:48,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:29:48,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:29:48,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:29:48,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:29:48,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:29:48,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:29:48,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:29:48,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:29:48,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:29:48,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:29:48,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:29:48,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:29:48,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:29:48,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:29:48,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:29:48,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:29:48,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:29:48,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:29:48,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:29:48,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:29:48,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:29:48,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:29:48,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:29:48,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:29:48,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:29:48,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:29:48,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:29:48,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:29:48,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:29:48,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:29:48,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:29:48,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:29:48,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:29:48,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:29:48,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:29:48,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:29:48,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:29:48,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:29:48,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:29:48,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:29:48,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:29:48,829 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:29:48,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:29:48,830 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:29:48,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:29:48,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:29:48,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:29:48,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:29:48,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:29:48,833 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:29:48,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:29:48,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:29:48,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:29:48,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:29:48,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:29:48,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:29:48,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:29:48,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:29:48,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:29:48,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:29:48,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:29:48,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:29:48,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:29:48,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:29:48,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:29:48,838 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 -> 7a10ccd42123994759390bf7d921442c28e0623a [2020-10-19 18:29:49,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:29:49,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:29:49,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:29:49,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:29:49,198 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:29:49,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Waldkirch.c [2020-10-19 18:29:49,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331d75dd8/f30684c3ad5e46d5a60729915354e744/FLAG1b1d9ee4a [2020-10-19 18:29:49,752 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:29:49,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Waldkirch.c [2020-10-19 18:29:49,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331d75dd8/f30684c3ad5e46d5a60729915354e744/FLAG1b1d9ee4a [2020-10-19 18:29:50,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331d75dd8/f30684c3ad5e46d5a60729915354e744 [2020-10-19 18:29:50,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:29:50,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:29:50,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:29:50,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:29:50,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:29:50,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6027d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50, skipping insertion in model container [2020-10-19 18:29:50,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:29:50,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:29:50,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:29:50,395 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:29:50,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:29:50,418 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:29:50,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50 WrapperNode [2020-10-19 18:29:50,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:29:50,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:29:50,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:29:50,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:29:50,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:29:50,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:29:50,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:29:50,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:29:50,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (1/1) ... [2020-10-19 18:29:50,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:29:50,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:29:50,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:29:50,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:29:50,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (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 [2020-10-19 18:29:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:29:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:29:50,721 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:29:50,721 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:29:50,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:29:50 BoogieIcfgContainer [2020-10-19 18:29:50,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:29:50,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:29:50,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:29:50,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:29:50,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:29:50" (1/3) ... [2020-10-19 18:29:50,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ef760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:29:50, skipping insertion in model container [2020-10-19 18:29:50,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:50" (2/3) ... [2020-10-19 18:29:50,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ef760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:29:50, skipping insertion in model container [2020-10-19 18:29:50,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:29:50" (3/3) ... [2020-10-19 18:29:50,731 INFO L111 eAbstractionObserver]: Analyzing ICFG Waldkirch.c [2020-10-19 18:29:50,743 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:29:50,750 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-19 18:29:50,764 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-19 18:29:50,785 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:29:50,785 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:29:50,785 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:29:50,785 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:29:50,786 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:29:50,786 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:29:50,786 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:29:50,786 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:29:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-19 18:29:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-19 18:29:50,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:50,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-19 18:29:50,807 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:50,813 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-19 18:29:50,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:50,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891173354] [2020-10-19 18:29:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:50,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891173354] [2020-10-19 18:29:50,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:50,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:29:50,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404944509] [2020-10-19 18:29:50,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:50,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:50,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:50,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:50,992 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-10-19 18:29:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:51,026 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-19 18:29:51,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:51,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-19 18:29:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:51,039 INFO L225 Difference]: With dead ends: 14 [2020-10-19 18:29:51,039 INFO L226 Difference]: Without dead ends: 5 [2020-10-19 18:29:51,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:51,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2020-10-19 18:29:51,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2020-10-19 18:29:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:29:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2020-10-19 18:29:51,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2020-10-19 18:29:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:51,080 INFO L481 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2020-10-19 18:29:51,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:51,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2020-10-19 18:29:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:29:51,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:51,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:29:51,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:29:51,082 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:51,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:51,083 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-10-19 18:29:51,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:51,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885402585] [2020-10-19 18:29:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:51,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885402585] [2020-10-19 18:29:51,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:51,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:29:51,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740401446] [2020-10-19 18:29:51,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:51,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:51,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:51,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:51,117 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 3 states. [2020-10-19 18:29:51,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:51,127 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2020-10-19 18:29:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:51,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-19 18:29:51,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:51,129 INFO L225 Difference]: With dead ends: 5 [2020-10-19 18:29:51,129 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:29:51,130 INFO L677 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 [2020-10-19 18:29:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:29:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:29:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:29:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:29:51,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-10-19 18:29:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:51,131 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:29:51,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:51,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:29:51,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:29:51,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:29:51,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 18:29:51,155 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-10-19 18:29:51,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 18:29:51,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-10-19 18:29:51,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 18:29:51,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 18:29:51,157 INFO L270 CegarLoopResult]: At program point L17(lines 11 18) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-10-19 18:29:51,157 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-19 18:29:51,157 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-19 18:29:51,158 INFO L270 CegarLoopResult]: At program point L14-2(lines 14 16) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-10-19 18:29:51,158 INFO L274 CegarLoopResult]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2020-10-19 18:29:51,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:29:51 BoogieIcfgContainer [2020-10-19 18:29:51,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:29:51,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:29:51,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:29:51,178 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:29:51,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:29:50" (3/4) ... [2020-10-19 18:29:51,183 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:29:51,196 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 18:29:51,196 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:29:51,271 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:29:51,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:29:51,277 INFO L168 Benchmark]: Toolchain (without parser) took 1093.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -115.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:51,278 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:29:51,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.13 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:51,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:51,280 INFO L168 Benchmark]: Boogie Preprocessor took 18.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:29:51,281 INFO L168 Benchmark]: RCFGBuilder took 203.36 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:51,282 INFO L168 Benchmark]: TraceAbstraction took 453.57 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:51,283 INFO L168 Benchmark]: Witness Printer took 93.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:29:51,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 232.13 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 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 81.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 203.36 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 453.57 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 93.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 9 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...