./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test13.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/ldv-regression/test13.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 22749f0c684d9d72525f8f3d1311c52d10bd60f7 ................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:53:18,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:53:18,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:53:18,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:53:18,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:53:18,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:53:18,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:53:18,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:53:18,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:53:18,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:53:18,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:53:18,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:53:18,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:53:18,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:53:18,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:53:18,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:53:18,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:53:18,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:53:18,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:53:18,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:53:18,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:53:18,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:53:18,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:53:18,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:53:18,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:53:18,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:53:18,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:53:18,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:53:18,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:53:18,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:53:18,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:53:18,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:53:18,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:53:18,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:53:18,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:53:18,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:53:18,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:53:18,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:53:18,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:53:18,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:53:18,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:53:18,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:53:18,164 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:53:18,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:53:18,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:53:18,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:53:18,169 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:53:18,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:53:18,171 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:53:18,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:53:18,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:53:18,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:53:18,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:53:18,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:53:18,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:53:18,174 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:53:18,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:53:18,175 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:53:18,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:53:18,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:53:18,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:53:18,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:53:18,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:53:18,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:18,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:53:18,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:53:18,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:53:18,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:53:18,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:53:18,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:53:18,179 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 -> 22749f0c684d9d72525f8f3d1311c52d10bd60f7 [2019-11-27 23:53:18,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:53:18,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:53:18,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:53:18,524 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:53:18,525 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:53:18,526 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test13.c [2019-11-27 23:53:18,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c18dfb474/5a8264e189e84e559c0539c92923b699/FLAG9b5687173 [2019-11-27 23:53:19,076 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:53:19,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test13.c [2019-11-27 23:53:19,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c18dfb474/5a8264e189e84e559c0539c92923b699/FLAG9b5687173 [2019-11-27 23:53:19,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c18dfb474/5a8264e189e84e559c0539c92923b699 [2019-11-27 23:53:19,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:53:19,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:53:19,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:19,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:53:19,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:53:19,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0c65a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19, skipping insertion in model container [2019-11-27 23:53:19,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:53:19,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:19,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:19,786 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:19,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:19,835 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:19,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19 WrapperNode [2019-11-27 23:53:19,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:19,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:19,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:19,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:19,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:19,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:19,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:19,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:19,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (1/1) ... [2019-11-27 23:53:19,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:19,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:19,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:19,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:19,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (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 [2019-11-27 23:53:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-27 23:53:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:53:20,244 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:20,244 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:53:20,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:20 BoogieIcfgContainer [2019-11-27 23:53:20,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:20,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:20,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:20,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:20,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:53:19" (1/3) ... [2019-11-27 23:53:20,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcb69e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:20, skipping insertion in model container [2019-11-27 23:53:20,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:19" (2/3) ... [2019-11-27 23:53:20,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcb69e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:20, skipping insertion in model container [2019-11-27 23:53:20,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:20" (3/3) ... [2019-11-27 23:53:20,260 INFO L109 eAbstractionObserver]: Analyzing ICFG test13.c [2019-11-27 23:53:20,271 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:20,280 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:53:20,292 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:53:20,324 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:20,325 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:20,325 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:20,325 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:20,325 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:20,326 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:20,326 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:20,326 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-27 23:53:20,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 23:53:20,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:20,349 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 23:53:20,350 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:20,357 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-11-27 23:53:20,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:20,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047989470] [2019-11-27 23:53:20,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:20,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047989470] [2019-11-27 23:53:20,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:20,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 23:53:20,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368879247] [2019-11-27 23:53:20,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:53:20,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:20,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:53:20,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:53:20,630 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-27 23:53:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:20,704 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-11-27 23:53:20,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:53:20,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-27 23:53:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:20,721 INFO L225 Difference]: With dead ends: 13 [2019-11-27 23:53:20,721 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:53:20,724 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 [2019-11-27 23:53:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:53:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:53:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:53:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:53:20,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-27 23:53:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:20,745 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:53:20,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:53:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:53:20,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:53:20,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:53:20,810 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:53:20,810 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:53:20,810 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:53:20,810 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:53:20,811 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-11-27 23:53:20,811 INFO L242 CegarLoopResult]: At program point L19(lines 17 20) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= ULTIMATE.start_check_~a.base ULTIMATE.start_check_~b.base) (= ULTIMATE.start_check_~b.offset ULTIMATE.start_check_~a.offset)) [2019-11-27 23:53:20,811 INFO L242 CegarLoopResult]: At program point L11(lines 4 12) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= ULTIMATE.start_check_~a.base ULTIMATE.start_check_~b.base) (= ULTIMATE.start_check_~b.offset ULTIMATE.start_check_~a.offset)) [2019-11-27 23:53:20,811 INFO L242 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: false [2019-11-27 23:53:20,812 INFO L246 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-27 23:53:20,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:53:20 BoogieIcfgContainer [2019-11-27 23:53:20,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:53:20,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:53:20,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:53:20,837 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:53:20,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:20" (3/4) ... [2019-11-27 23:53:20,841 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:53:20,851 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-27 23:53:20,851 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-27 23:53:20,851 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:53:20,891 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:53:20,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:53:20,893 INFO L168 Benchmark]: Toolchain (without parser) took 1386.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -115.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:20,894 INFO L168 Benchmark]: CDTParser took 0.25 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. [2019-11-27 23:53:20,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.19 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:20,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:20,897 INFO L168 Benchmark]: Boogie Preprocessor took 25.10 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. [2019-11-27 23:53:20,897 INFO L168 Benchmark]: RCFGBuilder took 257.87 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:20,898 INFO L168 Benchmark]: TraceAbstraction took 587.46 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:20,899 INFO L168 Benchmark]: Witness Printer took 54.63 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:20,903 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 329.19 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 125.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 257.87 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 587.46 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * Witness Printer took 54.63 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: ((pa == a && pa == a) && a == b) && b == a - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((pa == a && pa == a) && a == b) && b == a - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 27 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 45 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...