./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test17.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/ldv-regression/test17.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6dfa7040946af97f12868ff329bf2a2e2019a519 ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:58:32,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:58:32,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:58:32,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:58:32,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:58:32,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:58:32,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:58:32,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:58:32,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:58:32,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:58:32,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:58:32,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:58:32,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:58:32,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:58:32,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:58:32,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:58:32,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:58:32,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:58:32,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:58:32,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:58:32,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:58:32,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:58:32,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:58:32,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:58:32,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:58:32,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:58:32,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:58:32,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:58:32,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:58:32,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:58:32,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:58:32,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:58:32,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:58:32,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:58:32,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:58:32,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:58:32,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:58:32,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:58:32,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:58:32,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:58:32,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:58:32,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:58:32,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:58:32,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:58:32,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:58:32,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:58:32,612 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:58:32,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:58:32,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:58:32,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:58:32,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:58:32,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:58:32,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:58:32,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:58:32,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:58:32,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:58:32,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:58:32,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:58:32,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:58:32,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:58:32,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:58:32,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:58:32,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:58:32,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:58:32,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:58:32,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:58:32,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:58:32,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:58:32,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:58:32,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:58:32,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:58:32,619 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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dfa7040946af97f12868ff329bf2a2e2019a519 [2020-07-28 17:58:33,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:58:33,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:58:33,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:58:33,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:58:33,030 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:58:33,030 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test17.c [2020-07-28 17:58:33,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cadb849c/3387942c115146468d524c62b1051402/FLAGa01d0977e [2020-07-28 17:58:33,481 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:58:33,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test17.c [2020-07-28 17:58:33,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cadb849c/3387942c115146468d524c62b1051402/FLAGa01d0977e [2020-07-28 17:58:33,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cadb849c/3387942c115146468d524c62b1051402 [2020-07-28 17:58:33,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:58:33,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:58:33,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:33,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:58:33,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:58:33,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c421b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33, skipping insertion in model container [2020-07-28 17:58:33,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:58:33,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:58:34,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:34,114 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:58:34,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:34,159 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:58:34,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34 WrapperNode [2020-07-28 17:58:34,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:34,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:34,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:58:34,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:58:34,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (1/1) ... [2020-07-28 17:58:34,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (1/1) ... [2020-07-28 17:58:34,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:34,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:58:34,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:58:34,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:58:34,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (1/1) ... [2020-07-28 17:58:34,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (1/1) ... [2020-07-28 17:58:34,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (1/1) ... [2020-07-28 17:58:34,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (1/1) ... [2020-07-28 17:58:34,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (1/1) ... [2020-07-28 17:58:34,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (1/1) ... [2020-07-28 17:58:34,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (1/1) ... [2020-07-28 17:58:34,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:58:34,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:58:34,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:58:34,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:58:34,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (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 [2020-07-28 17:58:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:58:34,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:58:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-28 17:58:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:58:34,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:58:34,593 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:58:34,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:34 BoogieIcfgContainer [2020-07-28 17:58:34,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:58:34,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:58:34,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:58:34,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:58:34,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:58:33" (1/3) ... [2020-07-28 17:58:34,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571cc209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:34, skipping insertion in model container [2020-07-28 17:58:34,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:34" (2/3) ... [2020-07-28 17:58:34,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571cc209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:34, skipping insertion in model container [2020-07-28 17:58:34,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:34" (3/3) ... [2020-07-28 17:58:34,606 INFO L109 eAbstractionObserver]: Analyzing ICFG test17.c [2020-07-28 17:58:34,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:58:34,623 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:58:34,637 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:58:34,660 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:58:34,660 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:58:34,661 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:58:34,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:58:34,661 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:58:34,661 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:58:34,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:58:34,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:58:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 17:58:34,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:58:34,684 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:34,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:58:34,685 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:34,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:34,692 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2020-07-28 17:58:34,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:34,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592616270] [2020-07-28 17:58:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:34,905 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);~b~0 := 0; {12#true} is VALID [2020-07-28 17:58:34,908 INFO L280 TraceCheckUtils]: 1: Hoare triple {12#true} havoc main_#res;equal_#in~a.base, equal_#in~a.offset, equal_#in~b.base, equal_#in~b.offset := ~#a~0.base, ~#a~0.offset, ~#a~0.base, ~#a~0.offset;havoc equal_~a.base, equal_~a.offset, equal_~b.base, equal_~b.offset;equal_~a.base, equal_~a.offset := equal_#in~a.base, equal_#in~a.offset;equal_~b.base, equal_~b.offset := equal_#in~b.base, equal_#in~b.offset; {14#(and (= ULTIMATE.start_equal_~b.offset ULTIMATE.start_equal_~a.offset) (= ULTIMATE.start_equal_~a.base ULTIMATE.start_equal_~b.base))} is VALID [2020-07-28 17:58:34,910 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#(and (= ULTIMATE.start_equal_~b.offset ULTIMATE.start_equal_~a.offset) (= ULTIMATE.start_equal_~a.base ULTIMATE.start_equal_~b.base))} assume equal_~a.base != equal_~b.base || equal_~a.offset != equal_~b.offset; {13#false} is VALID [2020-07-28 17:58:34,911 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:58:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:58:34,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592616270] [2020-07-28 17:58:34,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:34,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 17:58:34,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654407255] [2020-07-28 17:58:34,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-28 17:58:34,924 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:34,930 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 17:58:34,954 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:34,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 17:58:34,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:34,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 17:58:34,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 17:58:34,971 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-07-28 17:58:35,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:35,040 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-07-28 17:58:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 17:58:35,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-28 17:58:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 17:58:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-07-28 17:58:35,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 17:58:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-07-28 17:58:35,050 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 12 transitions. [2020-07-28 17:58:35,076 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:35,084 INFO L225 Difference]: With dead ends: 13 [2020-07-28 17:58:35,084 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:58:35,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 17:58:35,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:58:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:58:35,114 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:35,115 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,115 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,116 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:35,117 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:35,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:35,118 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:35,118 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,118 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:35,119 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:35,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:35,120 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:35,120 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:35,120 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:58:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:58:35,123 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-07-28 17:58:35,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:35,123 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:58:35,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 17:58:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:35,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:35,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:58:35,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:58:35,168 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:58:35,168 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:58:35,168 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:58:35,169 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:58:35,169 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-28 17:58:35,170 INFO L264 CegarLoopResult]: At program point L18(lines 16 19) the Hoare annotation is: (and (= ULTIMATE.start_equal_~b.offset ULTIMATE.start_equal_~a.offset) (= ULTIMATE.start_equal_~a.base ULTIMATE.start_equal_~b.base)) [2020-07-28 17:58:35,170 INFO L264 CegarLoopResult]: At program point L11(lines 4 12) the Hoare annotation is: (and (= ULTIMATE.start_equal_~b.offset ULTIMATE.start_equal_~a.offset) (= ULTIMATE.start_equal_~a.base ULTIMATE.start_equal_~b.base)) [2020-07-28 17:58:35,170 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: false [2020-07-28 17:58:35,170 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-28 17:58:35,175 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:58:35,175 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:58:35,176 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 17:58:35,176 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 17:58:35,176 WARN L170 areAnnotationChecker]: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-28 17:58:35,178 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:35,178 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:35,178 INFO L163 areAnnotationChecker]: CFG has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:58:35,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:58:35 BoogieIcfgContainer [2020-07-28 17:58:35,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:58:35,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:58:35,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:58:35,193 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:58:35,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:34" (3/4) ... [2020-07-28 17:58:35,198 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:58:35,219 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 17:58:35,224 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:58:35,225 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:58:35,282 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:58:35,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:58:35,285 INFO L168 Benchmark]: Toolchain (without parser) took 1371.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -126.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,286 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:58:35,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.92 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,288 INFO L168 Benchmark]: Boogie Preprocessor took 23.65 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. [2020-07-28 17:58:35,289 INFO L168 Benchmark]: RCFGBuilder took 300.10 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. [2020-07-28 17:58:35,290 INFO L168 Benchmark]: TraceAbstraction took 594.42 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,290 INFO L168 Benchmark]: Witness Printer took 89.15 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. [2020-07-28 17:58:35,295 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.92 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 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 111.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.65 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 300.10 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. * TraceAbstraction took 594.42 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Witness Printer took 89.15 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: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: b == a && a == b - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: b == a && a == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 15 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...