./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invariants/eq1.c --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-invariants/eq1.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 c274df30268f9374edd6792525455fa06ae50abe ..................................................................................................................................................................................................................................................................................................... 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 00:06:10,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:06:10,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:06:10,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:06:10,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:06:10,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:06:10,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:06:10,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:06:10,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:06:10,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:06:10,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:06:10,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:06:10,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:06:10,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:06:10,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:06:10,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:06:10,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:06:10,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:06:10,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:06:10,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:06:10,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:06:10,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:06:10,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:06:10,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:06:10,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:06:10,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:06:10,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:06:10,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:06:10,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:06:10,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:06:10,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:06:10,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:06:10,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:06:11,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:06:11,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:06:11,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:06:11,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:06:11,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:06:11,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:06:11,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:06:11,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:06:11,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:06:11,031 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:06:11,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:06:11,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:06:11,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:06:11,035 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:06:11,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:06:11,037 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:06:11,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:06:11,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:06:11,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:06:11,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:06:11,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:06:11,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:06:11,040 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:06:11,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:06:11,040 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:06:11,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:06:11,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:06:11,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:06:11,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:06:11,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:06:11,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:06:11,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:06:11,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:06:11,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:06:11,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:06:11,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:06:11,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:06:11,046 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 -> c274df30268f9374edd6792525455fa06ae50abe [2019-11-28 00:06:11,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:06:11,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:06:11,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:06:11,351 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:06:11,351 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:06:11,352 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/eq1.c [2019-11-28 00:06:11,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18b70b331/6e9d68a914b540648a18b98662fcc695/FLAGea34098d8 [2019-11-28 00:06:11,856 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:06:11,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/eq1.c [2019-11-28 00:06:11,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18b70b331/6e9d68a914b540648a18b98662fcc695/FLAGea34098d8 [2019-11-28 00:06:12,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18b70b331/6e9d68a914b540648a18b98662fcc695 [2019-11-28 00:06:12,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:06:12,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:06:12,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:06:12,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:06:12,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:06:12,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e9f04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12, skipping insertion in model container [2019-11-28 00:06:12,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:06:12,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:06:12,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:06:12,486 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:06:12,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:06:12,522 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:06:12,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12 WrapperNode [2019-11-28 00:06:12,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:06:12,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:06:12,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:06:12,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:06:12,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:06:12,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:06:12,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:06:12,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:06:12,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (1/1) ... [2019-11-28 00:06:12,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:06:12,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:06:12,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:06:12,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:06:12,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (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 00:06:12,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:06:12,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:06:12,907 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:06:12,907 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 00:06:12,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:06:12 BoogieIcfgContainer [2019-11-28 00:06:12,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:06:12,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:06:12,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:06:12,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:06:12,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:06:12" (1/3) ... [2019-11-28 00:06:12,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3389fb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:06:12, skipping insertion in model container [2019-11-28 00:06:12,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:12" (2/3) ... [2019-11-28 00:06:12,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3389fb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:06:12, skipping insertion in model container [2019-11-28 00:06:12,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:06:12" (3/3) ... [2019-11-28 00:06:12,929 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2019-11-28 00:06:12,965 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:06:12,979 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:06:13,008 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:06:13,042 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:06:13,043 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:06:13,043 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:06:13,043 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:06:13,043 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:06:13,043 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:06:13,044 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:06:13,044 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:06:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 00:06:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 00:06:13,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:06:13,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 00:06:13,063 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:06:13,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:06:13,067 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-11-28 00:06:13,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:06:13,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764979026] [2019-11-28 00:06:13,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:06:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:13,174 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 00:06:13,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764979026] [2019-11-28 00:06:13,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:06:13,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 00:06:13,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064578004] [2019-11-28 00:06:13,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 00:06:13,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:06:13,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 00:06:13,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:06:13,201 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-28 00:06:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:06:13,218 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-28 00:06:13,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 00:06:13,219 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-28 00:06:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:06:13,227 INFO L225 Difference]: With dead ends: 19 [2019-11-28 00:06:13,227 INFO L226 Difference]: Without dead ends: 7 [2019-11-28 00:06:13,230 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:06:13,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-28 00:06:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 00:06:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 00:06:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-28 00:06:13,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2019-11-28 00:06:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:06:13,260 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-28 00:06:13,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 00:06:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2019-11-28 00:06:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 00:06:13,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:06:13,262 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 00:06:13,262 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:06:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:06:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash 29810958, now seen corresponding path program 1 times [2019-11-28 00:06:13,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:06:13,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704545711] [2019-11-28 00:06:13,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:06:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:13,417 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 00:06:13,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704545711] [2019-11-28 00:06:13,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:06:13,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:06:13,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088846079] [2019-11-28 00:06:13,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:06:13,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:06:13,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:06:13,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:06:13,421 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 4 states. [2019-11-28 00:06:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:06:13,457 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-11-28 00:06:13,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:06:13,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 00:06:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:06:13,459 INFO L225 Difference]: With dead ends: 7 [2019-11-28 00:06:13,459 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:06:13,460 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 00:06:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:06:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:06:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:06:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:06:13,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-28 00:06:13,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:06:13,462 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:06:13,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:06:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:06:13,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:06:13,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:06:13,489 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:06:13,490 INFO L246 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2019-11-28 00:06:13,490 INFO L242 CegarLoopResult]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~w~0)) [2019-11-28 00:06:13,490 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 00:06:13,490 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:06:13,490 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:06:13,491 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 00:06:13,491 INFO L249 CegarLoopResult]: At program point L22(lines 9 23) the Hoare annotation is: true [2019-11-28 00:06:13,491 INFO L246 CegarLoopResult]: For program point L14-2(lines 14 20) no Hoare annotation was computed. [2019-11-28 00:06:13,491 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 00:06:13,492 INFO L249 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-28 00:06:13,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:06:13 BoogieIcfgContainer [2019-11-28 00:06:13,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:06:13,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:06:13,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:06:13,511 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:06:13,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:06:12" (3/4) ... [2019-11-28 00:06:13,515 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:06:13,524 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 00:06:13,524 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:06:13,569 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:06:13,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:06:13,572 INFO L168 Benchmark]: Toolchain (without parser) took 1325.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -141.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:13,573 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:06:13,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.46 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:13,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.00 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:06:13,575 INFO L168 Benchmark]: Boogie Preprocessor took 115.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -203.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:13,576 INFO L168 Benchmark]: RCFGBuilder took 227.09 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:13,576 INFO L168 Benchmark]: TraceAbstraction took 599.93 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. [2019-11-28 00:06:13,577 INFO L168 Benchmark]: Witness Printer took 58.63 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. [2019-11-28 00:06:13,581 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.46 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 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 41.00 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 115.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -203.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 227.09 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 599.93 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 58.63 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: 5]: 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: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: z == y && x == w - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 2 SDslu, 3 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 9 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...