./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/signedintegeroverflow-regression/IntegerPromotion-1.i --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/signedintegeroverflow-regression/IntegerPromotion-1.i -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 2ecc737c5af1d503eeeb325d3c287e7ad2d57d21 ............................................................................................................................................................................................................................................................................................................. 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 18:28:55,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:28:55,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:28:55,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:28:55,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:28:55,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:28:55,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:28:55,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:28:55,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:28:55,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:28:55,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:28:55,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:28:55,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:28:55,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:28:55,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:28:55,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:28:55,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:28:55,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:28:55,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:28:55,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:28:55,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:28:55,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:28:55,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:28:55,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:28:55,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:28:55,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:28:55,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:28:55,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:28:55,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:28:55,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:28:55,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:28:55,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:28:55,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:28:55,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:28:55,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:28:55,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:28:55,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:28:55,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:28:55,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:28:55,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:28:55,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:28:55,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:28:55,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:28:55,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:28:55,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:28:55,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:28:55,536 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:28:55,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:28:55,537 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:28:55,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:28:55,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:28:55,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:28:55,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:28:55,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:28:55,539 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:28:55,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:28:55,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:28:55,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:28:55,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:28:55,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:28:55,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:28:55,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:28:55,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:28:55,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:28:55,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:28:55,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:28:55,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:28:55,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:28:55,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:28:55,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:28:55,543 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 -> 2ecc737c5af1d503eeeb325d3c287e7ad2d57d21 [2020-10-19 18:28:55,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:28:55,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:28:55,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:28:55,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:28:55,889 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:28:55,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/signedintegeroverflow-regression/IntegerPromotion-1.i [2020-10-19 18:28:55,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d283383/cad37fa5b4574ab48e7634f199b31850/FLAG999bd4664 [2020-10-19 18:28:56,414 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:28:56,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/signedintegeroverflow-regression/IntegerPromotion-1.i [2020-10-19 18:28:56,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d283383/cad37fa5b4574ab48e7634f199b31850/FLAG999bd4664 [2020-10-19 18:28:56,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d283383/cad37fa5b4574ab48e7634f199b31850 [2020-10-19 18:28:56,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:28:56,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:28:56,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:28:56,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:28:56,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:28:56,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:28:56" (1/1) ... [2020-10-19 18:28:56,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638d823e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:56, skipping insertion in model container [2020-10-19 18:28:56,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:28:56" (1/1) ... [2020-10-19 18:28:56,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:28:56,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:28:57,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:28:57,242 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:28:57,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:28:57,360 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:28:57,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57 WrapperNode [2020-10-19 18:28:57,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:28:57,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:28:57,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:28:57,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:28:57,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:28:57,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:28:57,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:28:57,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:28:57,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:28:57,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:28:57,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:28:57,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:28:57,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (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 18:28:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:28:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:28:57,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:28:57,800 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:28:57,805 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:28:57,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:28:57 BoogieIcfgContainer [2020-10-19 18:28:57,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:28:57,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:28:57,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:28:57,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:28:57,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:28:56" (1/3) ... [2020-10-19 18:28:57,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727bd7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:28:57, skipping insertion in model container [2020-10-19 18:28:57,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (2/3) ... [2020-10-19 18:28:57,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727bd7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:28:57, skipping insertion in model container [2020-10-19 18:28:57,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:28:57" (3/3) ... [2020-10-19 18:28:57,819 INFO L111 eAbstractionObserver]: Analyzing ICFG IntegerPromotion-1.i [2020-10-19 18:28:57,831 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:28:57,839 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-19 18:28:57,855 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-19 18:28:57,882 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:28:57,883 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:28:57,883 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:28:57,883 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:28:57,883 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:28:57,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:28:57,884 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:28:57,884 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:28:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-19 18:28:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-19 18:28:57,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:28:57,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-19 18:28:57,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:28:57,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:28:57,916 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2020-10-19 18:28:57,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:28:57,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123429382] [2020-10-19 18:28:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:28:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:28:58,124 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 18:28:58,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123429382] [2020-10-19 18:28:58,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:28:58,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:28:58,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482251080] [2020-10-19 18:28:58,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:28:58,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:28:58,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:28:58,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:28:58,153 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-10-19 18:28:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:28:58,190 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-10-19 18:28:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:28:58,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-19 18:28:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:28:58,202 INFO L225 Difference]: With dead ends: 13 [2020-10-19 18:28:58,202 INFO L226 Difference]: Without dead ends: 8 [2020-10-19 18:28:58,205 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 18:28:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-19 18:28:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-19 18:28:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-19 18:28:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-10-19 18:28:58,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 3 [2020-10-19 18:28:58,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:28:58,237 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-10-19 18:28:58,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:28:58,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-10-19 18:28:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:28:58,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:28:58,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:28:58,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:28:58,239 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:28:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:28:58,240 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2020-10-19 18:28:58,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:28:58,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909591392] [2020-10-19 18:28:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:28:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:28:58,270 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 18:28:58,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909591392] [2020-10-19 18:28:58,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:28:58,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:28:58,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059386894] [2020-10-19 18:28:58,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:28:58,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:28:58,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:28:58,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:28:58,275 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand 3 states. [2020-10-19 18:28:58,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:28:58,285 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-10-19 18:28:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:28:58,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-19 18:28:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:28:58,286 INFO L225 Difference]: With dead ends: 8 [2020-10-19 18:28:58,287 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:28:58,288 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 18:28:58,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:28:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:28:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:28:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:28:58,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-10-19 18:28:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:28:58,289 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:28:58,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:28:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:28:58,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:28:58,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:28:58,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 18:28:58,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 333) no Hoare annotation was computed. [2020-10-19 18:28:58,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 18:28:58,307 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 18:28:58,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 333) no Hoare annotation was computed. [2020-10-19 18:28:58,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 333) no Hoare annotation was computed. [2020-10-19 18:28:58,308 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 333) no Hoare annotation was computed. [2020-10-19 18:28:58,308 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 18:28:58,308 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 18:28:58,309 INFO L270 CegarLoopResult]: At program point L335(lines 331 336) the Hoare annotation is: (<= ULTIMATE.start_main_~a~0 32767) [2020-10-19 18:28:58,309 INFO L274 CegarLoopResult]: For program point L333(line 333) no Hoare annotation was computed. [2020-10-19 18:28:58,309 INFO L274 CegarLoopResult]: For program point L333-1(line 333) no Hoare annotation was computed. [2020-10-19 18:28:58,309 INFO L274 CegarLoopResult]: For program point L333-2(line 333) no Hoare annotation was computed. [2020-10-19 18:28:58,309 INFO L274 CegarLoopResult]: For program point L333-3(line 333) no Hoare annotation was computed. [2020-10-19 18:28:58,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:28:58 BoogieIcfgContainer [2020-10-19 18:28:58,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:28:58,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:28:58,327 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:28:58,327 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:28:58,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:28:57" (3/4) ... [2020-10-19 18:28:58,331 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:28:58,342 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-19 18:28:58,343 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 18:28:58,343 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:28:58,385 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:28:58,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:28:58,391 INFO L168 Benchmark]: Toolchain (without parser) took 1632.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -103.2 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,392 INFO L168 Benchmark]: CDTParser took 0.30 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 18:28:58,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.70 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 18:28:58,394 INFO L168 Benchmark]: Boogie Preprocessor took 24.60 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 18:28:58,395 INFO L168 Benchmark]: RCFGBuilder took 369.74 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,396 INFO L168 Benchmark]: TraceAbstraction took 514.91 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: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,397 INFO L168 Benchmark]: Witness Printer took 59.15 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 601.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.70 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. * Boogie Preprocessor took 24.60 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 369.74 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 514.91 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: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * Witness Printer took 59.15 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 333]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 333]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 333]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 333]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 331]: Loop Invariant Derived loop invariant: a <= 32767 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 10 SDslu, 2 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 3 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 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, 29 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...