./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/NetBSD_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/loop-invgen/NetBSD_loop.i -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 ca707ecc133af2ec0063556d89a3ce449d0860eb ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:01:48,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:01:48,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:01:48,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:01:48,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:01:48,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:01:48,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:01:48,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:01:48,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:01:48,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:01:48,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:01:48,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:01:48,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:01:48,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:01:48,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:01:48,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:01:48,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:01:48,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:01:48,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:01:48,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:01:48,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:01:48,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:01:48,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:01:48,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:01:48,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:01:48,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:01:48,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:01:48,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:01:48,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:01:48,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:01:48,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:01:48,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:01:48,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:01:48,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:01:48,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:01:48,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:01:48,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:01:48,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:01:48,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:01:48,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:01:48,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:01:48,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:01:48,608 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:01:48,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:01:48,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:01:48,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:01:48,610 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:01:48,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:01:48,611 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:01:48,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:01:48,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:01:48,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:01:48,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:01:48,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:01:48,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:01:48,612 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:01:48,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:01:48,613 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:01:48,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:01:48,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:01:48,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:01:48,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:01:48,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:01:48,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:01:48,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:01:48,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:01:48,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:01:48,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:01:48,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:01:48,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:01:48,617 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 -> ca707ecc133af2ec0063556d89a3ce449d0860eb [2019-11-28 00:01:48,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:01:48,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:01:48,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:01:48,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:01:48,954 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:01:48,956 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2019-11-28 00:01:49,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d3bb609/588933688e894c98b7ab987d23337673/FLAGe0743de2e [2019-11-28 00:01:49,483 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:01:49,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2019-11-28 00:01:49,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d3bb609/588933688e894c98b7ab987d23337673/FLAGe0743de2e [2019-11-28 00:01:49,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d3bb609/588933688e894c98b7ab987d23337673 [2019-11-28 00:01:49,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:01:49,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:01:49,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:01:49,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:01:49,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:01:49,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:01:49" (1/1) ... [2019-11-28 00:01:49,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af3dfac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:49, skipping insertion in model container [2019-11-28 00:01:49,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:01:49" (1/1) ... [2019-11-28 00:01:49,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:01:49,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:01:50,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:01:50,056 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:01:50,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:01:50,087 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:01:50,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50 WrapperNode [2019-11-28 00:01:50,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:01:50,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:01:50,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:01:50,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:01:50,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (1/1) ... [2019-11-28 00:01:50,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (1/1) ... [2019-11-28 00:01:50,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:01:50,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:01:50,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:01:50,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:01:50,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (1/1) ... [2019-11-28 00:01:50,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (1/1) ... [2019-11-28 00:01:50,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (1/1) ... [2019-11-28 00:01:50,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (1/1) ... [2019-11-28 00:01:50,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (1/1) ... [2019-11-28 00:01:50,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (1/1) ... [2019-11-28 00:01:50,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (1/1) ... [2019-11-28 00:01:50,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:01:50,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:01:50,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:01:50,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:01:50,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (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 [2019-11-28 00:01:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:01:50,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:01:50,448 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:01:50,448 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 00:01:50,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:01:50 BoogieIcfgContainer [2019-11-28 00:01:50,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:01:50,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:01:50,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:01:50,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:01:50,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:01:49" (1/3) ... [2019-11-28 00:01:50,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2a32c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:01:50, skipping insertion in model container [2019-11-28 00:01:50,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:01:50" (2/3) ... [2019-11-28 00:01:50,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2a32c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:01:50, skipping insertion in model container [2019-11-28 00:01:50,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:01:50" (3/3) ... [2019-11-28 00:01:50,478 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2019-11-28 00:01:50,490 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:01:50,497 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 00:01:50,525 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 00:01:50,550 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:01:50,550 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:01:50,551 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:01:50,551 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:01:50,551 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:01:50,551 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:01:50,552 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:01:50,552 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:01:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-28 00:01:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 00:01:50,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:01:50,576 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 00:01:50,576 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:01:50,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:01:50,583 INFO L82 PathProgramCache]: Analyzing trace with hash 920081230, now seen corresponding path program 1 times [2019-11-28 00:01:50,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:01:50,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400177092] [2019-11-28 00:01:50,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:01:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:01:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:01:50,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400177092] [2019-11-28 00:01:50,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:01:50,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 00:01:50,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496255990] [2019-11-28 00:01:50,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:01:50,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:01:50,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:01:50,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:01:50,762 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2019-11-28 00:01:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:01:50,851 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-11-28 00:01:50,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:01:50,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-28 00:01:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:01:50,862 INFO L225 Difference]: With dead ends: 36 [2019-11-28 00:01:50,863 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 00:01:50,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:01:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 00:01:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-28 00:01:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 00:01:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-28 00:01:50,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2019-11-28 00:01:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:01:50,895 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-28 00:01:50,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:01:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-28 00:01:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 00:01:50,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:01:50,896 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:01:50,896 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:01:50,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:01:50,897 INFO L82 PathProgramCache]: Analyzing trace with hash -565045263, now seen corresponding path program 1 times [2019-11-28 00:01:50,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:01:50,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338693459] [2019-11-28 00:01:50,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:01:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:01:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:01:50,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338693459] [2019-11-28 00:01:50,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:01:50,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 00:01:50,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254143189] [2019-11-28 00:01:50,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:01:50,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:01:50,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:01:50,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:01:50,959 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2019-11-28 00:01:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:01:51,045 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-28 00:01:51,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:01:51,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 00:01:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:01:51,046 INFO L225 Difference]: With dead ends: 17 [2019-11-28 00:01:51,046 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 00:01:51,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:01:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 00:01:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-28 00:01:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 00:01:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-28 00:01:51,053 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2019-11-28 00:01:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:01:51,054 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-28 00:01:51,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:01:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-28 00:01:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 00:01:51,055 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:01:51,055 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:01:51,055 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:01:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:01:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash 889328994, now seen corresponding path program 1 times [2019-11-28 00:01:51,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:01:51,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450290669] [2019-11-28 00:01:51,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:01:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:01:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:01:51,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450290669] [2019-11-28 00:01:51,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198037591] [2019-11-28 00:01:51,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:01:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:01:51,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 00:01:51,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:01:51,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:01:51,342 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:01:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:01:51,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:01:51,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2019-11-28 00:01:51,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097510871] [2019-11-28 00:01:51,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 00:01:51,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:01:51,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 00:01:51,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-11-28 00:01:51,360 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2019-11-28 00:01:51,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:01:51,508 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-28 00:01:51,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 00:01:51,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-11-28 00:01:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:01:51,510 INFO L225 Difference]: With dead ends: 23 [2019-11-28 00:01:51,510 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 00:01:51,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2019-11-28 00:01:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 00:01:51,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-28 00:01:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 00:01:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-28 00:01:51,522 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2019-11-28 00:01:51,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:01:51,523 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-28 00:01:51,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 00:01:51,524 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-28 00:01:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 00:01:51,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:01:51,525 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2019-11-28 00:01:51,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:01:51,730 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:01:51,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:01:51,731 INFO L82 PathProgramCache]: Analyzing trace with hash 781964945, now seen corresponding path program 2 times [2019-11-28 00:01:51,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:01:51,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912495770] [2019-11-28 00:01:51,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:01:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:01:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-28 00:01:51,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912495770] [2019-11-28 00:01:51,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891154665] [2019-11-28 00:01:51,834 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:01:51,865 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-28 00:01:51,865 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:01:51,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 00:01:51,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:01:51,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:01:51,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:01:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-28 00:01:51,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:01:51,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2019-11-28 00:01:51,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585580484] [2019-11-28 00:01:51,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 00:01:51,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:01:51,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 00:01:51,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:01:51,931 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2019-11-28 00:01:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:01:52,032 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-28 00:01:52,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:01:52,033 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-28 00:01:52,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:01:52,033 INFO L225 Difference]: With dead ends: 19 [2019-11-28 00:01:52,034 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:01:52,034 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-28 00:01:52,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:01:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:01:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:01:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:01:52,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-11-28 00:01:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:01:52,036 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:01:52,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 00:01:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:01:52,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:01:52,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:01:52,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:01:52,447 INFO L246 CegarLoopResult]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-28 00:01:52,447 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:01:52,448 INFO L242 CegarLoopResult]: At program point L4-5(lines 1 31) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) [2019-11-28 00:01:52,448 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 00:01:52,448 INFO L246 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-28 00:01:52,448 INFO L246 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-28 00:01:52,448 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 00:01:52,449 INFO L246 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-28 00:01:52,451 INFO L249 CegarLoopResult]: At program point L30(lines 11 31) the Hoare annotation is: true [2019-11-28 00:01:52,451 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:01:52,451 INFO L249 CegarLoopResult]: At program point L30-1(lines 10 31) the Hoare annotation is: true [2019-11-28 00:01:52,451 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:01:52,452 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 00:01:52,452 INFO L242 CegarLoopResult]: At program point L24-2(lines 24 29) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~glob2_p_off~0)) (.cse1 (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0))) (or (and (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (<= ULTIMATE.start_main_~glob2_p_off~0 0) .cse0 (<= (+ ULTIMATE.start_main_~glob2_p_off~0 1) ULTIMATE.start_main_~MAXPATHLEN~0) .cse1))) [2019-11-28 00:01:52,453 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 00:01:52,453 INFO L242 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) [2019-11-28 00:01:52,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:01:52 BoogieIcfgContainer [2019-11-28 00:01:52,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:01:52,491 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:01:52,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:01:52,492 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:01:52,492 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:01:50" (3/4) ... [2019-11-28 00:01:52,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:01:52,511 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 00:01:52,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:01:52,586 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:01:52,587 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:01:52,589 INFO L168 Benchmark]: Toolchain (without parser) took 2739.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 961.7 MB in the beginning and 966.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 118.0 MB. Max. memory is 11.5 GB. [2019-11-28 00:01:52,590 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:01:52,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.19 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:01:52,591 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -170.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:01:52,592 INFO L168 Benchmark]: Boogie Preprocessor took 20.19 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. [2019-11-28 00:01:52,593 INFO L168 Benchmark]: RCFGBuilder took 256.09 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:01:52,593 INFO L168 Benchmark]: TraceAbstraction took 2038.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.9 MB in the end (delta: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:01:52,594 INFO L168 Benchmark]: Witness Printer took 96.05 ms. Allocated memory is still 1.2 GB. Free memory is still 966.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:01:52,598 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.19 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 84.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -170.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.19 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. * RCFGBuilder took 256.09 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2038.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.9 MB in the end (delta: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 11.5 GB. * Witness Printer took 96.05 ms. Allocated memory is still 1.2 GB. Free memory is still 966.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((1 <= MAXPATHLEN && 1 == cond) && 0 <= glob2_p_off) && glob2_p_off <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((1 <= MAXPATHLEN && 0 <= glob2_p_off) && 1 == cond) && glob2_pathlim_off <= MAXPATHLEN) || (((glob2_p_off <= 0 && 0 <= glob2_p_off) && glob2_p_off + 1 <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((1 <= MAXPATHLEN && 1 == cond) && 0 <= glob2_p_off) && glob2_p_off <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 29 SDtfs, 57 SDslu, 37 SDs, 0 SdLazy, 73 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 19 NumberOfFragments, 63 HoareAnnotationTreeSize, 5 FomulaSimplifications, 230 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 76 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 3677 SizeOfPredicates, 17 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...