./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs1f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 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/array-fpi/brs1f.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 80fd0a896763b908f9317a32a4ce4a8bee26f3fe ......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 20:49:54,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 20:49:54,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 20:49:54,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 20:49:54,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 20:49:54,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 20:49:54,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 20:49:54,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 20:49:54,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 20:49:54,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 20:49:54,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 20:49:54,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 20:49:54,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 20:49:54,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 20:49:54,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 20:49:54,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 20:49:54,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 20:49:54,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 20:49:54,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 20:49:54,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 20:49:54,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 20:49:54,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 20:49:54,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 20:49:54,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 20:49:54,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 20:49:54,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 20:49:54,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 20:49:54,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 20:49:54,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 20:49:54,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 20:49:54,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 20:49:54,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 20:49:54,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 20:49:54,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 20:49:54,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 20:49:54,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 20:49:54,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 20:49:54,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 20:49:54,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 20:49:54,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 20:49:54,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 20:49:54,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 20:49:54,259 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 20:49:54,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 20:49:54,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 20:49:54,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 20:49:54,266 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 20:49:54,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 20:49:54,266 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 20:49:54,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 20:49:54,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 20:49:54,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 20:49:54,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 20:49:54,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 20:49:54,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 20:49:54,269 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 20:49:54,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 20:49:54,270 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 20:49:54,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 20:49:54,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 20:49:54,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 20:49:54,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 20:49:54,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 20:49:54,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 20:49:54,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 20:49:54,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 20:49:54,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 20:49:54,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 20:49:54,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 20:49:54,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 20:49:54,275 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 -> 80fd0a896763b908f9317a32a4ce4a8bee26f3fe [2019-11-19 20:49:54,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 20:49:54,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 20:49:54,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 20:49:54,607 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 20:49:54,607 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 20:49:54,608 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs1f.c [2019-11-19 20:49:54,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1834bfed3/ad474929fdce4701b5786c03f479e13f/FLAGe248e03ab [2019-11-19 20:49:55,113 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 20:49:55,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs1f.c [2019-11-19 20:49:55,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1834bfed3/ad474929fdce4701b5786c03f479e13f/FLAGe248e03ab [2019-11-19 20:49:55,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1834bfed3/ad474929fdce4701b5786c03f479e13f [2019-11-19 20:49:55,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 20:49:55,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 20:49:55,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 20:49:55,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 20:49:55,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 20:49:55,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:55,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7e88c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55, skipping insertion in model container [2019-11-19 20:49:55,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:55,572 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 20:49:55,595 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 20:49:55,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:49:55,847 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 20:49:55,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:49:55,890 INFO L192 MainTranslator]: Completed translation [2019-11-19 20:49:55,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55 WrapperNode [2019-11-19 20:49:55,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 20:49:55,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 20:49:55,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 20:49:55,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 20:49:55,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:55,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:55,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 20:49:55,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 20:49:55,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 20:49:55,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 20:49:55,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:55,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:55,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:55,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:55,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:56,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:56,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (1/1) ... [2019-11-19 20:49:56,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 20:49:56,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 20:49:56,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 20:49:56,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 20:49:56,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (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 [2019-11-19 20:49:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 20:49:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 20:49:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 20:49:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 20:49:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 20:49:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 20:49:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 20:49:56,301 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 20:49:56,301 INFO L285 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-19 20:49:56,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:49:56 BoogieIcfgContainer [2019-11-19 20:49:56,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 20:49:56,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 20:49:56,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 20:49:56,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 20:49:56,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:49:55" (1/3) ... [2019-11-19 20:49:56,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a444753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:49:56, skipping insertion in model container [2019-11-19 20:49:56,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:55" (2/3) ... [2019-11-19 20:49:56,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a444753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:49:56, skipping insertion in model container [2019-11-19 20:49:56,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:49:56" (3/3) ... [2019-11-19 20:49:56,317 INFO L109 eAbstractionObserver]: Analyzing ICFG brs1f.c [2019-11-19 20:49:56,330 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 20:49:56,338 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 20:49:56,365 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 20:49:56,393 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 20:49:56,394 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 20:49:56,394 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 20:49:56,394 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 20:49:56,394 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 20:49:56,395 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 20:49:56,395 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 20:49:56,395 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 20:49:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-19 20:49:56,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 20:49:56,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:49:56,427 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:49:56,427 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:49:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:49:56,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1623807605, now seen corresponding path program 1 times [2019-11-19 20:49:56,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:49:56,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186548732] [2019-11-19 20:49:56,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:49:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:49:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:49:56,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186548732] [2019-11-19 20:49:56,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:49:56,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 20:49:56,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214874955] [2019-11-19 20:49:56,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 20:49:56,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:49:56,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 20:49:56,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 20:49:56,587 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-19 20:49:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:49:56,602 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2019-11-19 20:49:56,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 20:49:56,603 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-19 20:49:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:49:56,611 INFO L225 Difference]: With dead ends: 33 [2019-11-19 20:49:56,612 INFO L226 Difference]: Without dead ends: 14 [2019-11-19 20:49:56,614 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 [2019-11-19 20:49:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-19 20:49:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-19 20:49:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-19 20:49:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-19 20:49:56,646 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-19 20:49:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:49:56,647 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-19 20:49:56,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 20:49:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-19 20:49:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 20:49:56,648 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:49:56,648 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:49:56,649 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:49:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:49:56,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1308886944, now seen corresponding path program 1 times [2019-11-19 20:49:56,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:49:56,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438314920] [2019-11-19 20:49:56,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:49:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:49:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:49:56,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438314920] [2019-11-19 20:49:56,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:49:56,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 20:49:56,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092167891] [2019-11-19 20:49:56,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 20:49:56,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:49:56,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 20:49:56,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 20:49:56,727 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-11-19 20:49:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:49:56,786 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-11-19 20:49:56,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 20:49:56,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-19 20:49:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:49:56,788 INFO L225 Difference]: With dead ends: 25 [2019-11-19 20:49:56,788 INFO L226 Difference]: Without dead ends: 17 [2019-11-19 20:49:56,789 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 20:49:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-19 20:49:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2019-11-19 20:49:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-19 20:49:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-19 20:49:56,793 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2019-11-19 20:49:56,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:49:56,794 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-19 20:49:56,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 20:49:56,794 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-19 20:49:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 20:49:56,795 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:49:56,795 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:49:56,795 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:49:56,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:49:56,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1738269227, now seen corresponding path program 1 times [2019-11-19 20:49:56,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:49:56,797 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631088754] [2019-11-19 20:49:56,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:49:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:49:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 20:49:56,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631088754] [2019-11-19 20:49:56,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:49:56,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 20:49:56,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416656832] [2019-11-19 20:49:56,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 20:49:56,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:49:56,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 20:49:56,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 20:49:56,863 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-11-19 20:49:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:49:56,913 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-11-19 20:49:56,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 20:49:56,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-19 20:49:56,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:49:56,914 INFO L225 Difference]: With dead ends: 27 [2019-11-19 20:49:56,914 INFO L226 Difference]: Without dead ends: 20 [2019-11-19 20:49:56,915 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 20:49:56,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-19 20:49:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-11-19 20:49:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-19 20:49:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-19 20:49:56,920 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2019-11-19 20:49:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:49:56,920 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-19 20:49:56,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 20:49:56,921 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-19 20:49:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 20:49:56,922 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:49:56,922 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:49:56,922 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:49:56,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:49:56,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1896871737, now seen corresponding path program 1 times [2019-11-19 20:49:56,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:49:56,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609018471] [2019-11-19 20:49:56,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:49:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:49:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:49:57,007 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:49:57,007 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 20:49:57,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:49:57 BoogieIcfgContainer [2019-11-19 20:49:57,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 20:49:57,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 20:49:57,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 20:49:57,038 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 20:49:57,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:49:56" (3/4) ... [2019-11-19 20:49:57,040 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 20:49:57,096 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 20:49:57,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 20:49:57,098 INFO L168 Benchmark]: Toolchain (without parser) took 1552.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -94.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-11-19 20:49:57,098 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. [2019-11-19 20:49:57,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.89 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 20:49:57,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 20:49:57,101 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 20:49:57,102 INFO L168 Benchmark]: RCFGBuilder took 297.72 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-19 20:49:57,103 INFO L168 Benchmark]: TraceAbstraction took 731.52 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: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. [2019-11-19 20:49:57,104 INFO L168 Benchmark]: Witness Printer took 58.75 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 20:49:57,109 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 340.89 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 89.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.28 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 297.72 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 731.52 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: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.75 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=1] [L26] COND TRUE i