./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/array-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/loops/array-2.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4c882ea31ded5d72491d0989b7efed83bec9369 ........................................................................................................................................................................................................................................................................................................................ 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 0.1.25-9a8b2e8 [2020-10-20 00:53:28,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:53:28,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:53:28,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:53:28,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:53:28,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:53:28,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:53:28,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:53:28,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:53:28,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:53:28,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:53:28,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:53:28,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:53:28,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:53:28,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:53:28,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:53:28,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:53:28,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:53:28,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:53:28,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:53:28,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:53:28,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:53:28,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:53:28,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:53:28,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:53:28,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:53:28,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:53:28,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:53:28,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:53:28,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:53:28,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:53:28,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:53:28,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:53:28,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:53:28,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:53:28,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:53:28,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:53:28,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:53:28,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:53:28,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:53:28,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:53:28,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:53:28,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:53:28,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:53:28,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:53:28,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:53:28,459 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:53:28,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:53:28,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:53:28,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:53:28,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:53:28,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:53:28,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:53:28,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:53:28,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:53:28,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:53:28,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:53:28,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:53:28,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:53:28,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:53:28,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:53:28,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:53:28,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:53:28,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:53:28,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:53:28,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:53:28,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:53:28,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:53:28,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:53:28,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:53:28,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:53:28,467 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(reach_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 -> a4c882ea31ded5d72491d0989b7efed83bec9369 [2020-10-20 00:53:28,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:53:28,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:53:28,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:53:28,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:53:28,723 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:53:28,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/array-2.c [2020-10-20 00:53:28,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f516da66/55f3d75610834d3b89a49095de948f7c/FLAG1a4846866 [2020-10-20 00:53:29,226 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:53:29,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/array-2.c [2020-10-20 00:53:29,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f516da66/55f3d75610834d3b89a49095de948f7c/FLAG1a4846866 [2020-10-20 00:53:29,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f516da66/55f3d75610834d3b89a49095de948f7c [2020-10-20 00:53:29,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:53:29,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:53:29,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:53:29,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:53:29,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:53:29,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:53:29" (1/1) ... [2020-10-20 00:53:29,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792a6349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:29, skipping insertion in model container [2020-10-20 00:53:29,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:53:29" (1/1) ... [2020-10-20 00:53:29,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:53:29,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:53:29,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:53:29,987 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:53:30,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:53:30,040 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:53:30,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30 WrapperNode [2020-10-20 00:53:30,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:53:30,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:53:30,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:53:30,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:53:30,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... [2020-10-20 00:53:30,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... [2020-10-20 00:53:30,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:53:30,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:53:30,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:53:30,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:53:30,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... [2020-10-20 00:53:30,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... [2020-10-20 00:53:30,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... [2020-10-20 00:53:30,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... [2020-10-20 00:53:30,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... [2020-10-20 00:53:30,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... [2020-10-20 00:53:30,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... [2020-10-20 00:53:30,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:53:30,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:53:30,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:53:30,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:53:30,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:53:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:53:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:53:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:53:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:53:30,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:53:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:53:30,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:53:30,441 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:53:30,442 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 00:53:30,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:53:30 BoogieIcfgContainer [2020-10-20 00:53:30,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:53:30,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:53:30,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:53:30,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:53:30,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:53:29" (1/3) ... [2020-10-20 00:53:30,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744e7936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:53:30, skipping insertion in model container [2020-10-20 00:53:30,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:30" (2/3) ... [2020-10-20 00:53:30,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744e7936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:53:30, skipping insertion in model container [2020-10-20 00:53:30,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:53:30" (3/3) ... [2020-10-20 00:53:30,454 INFO L111 eAbstractionObserver]: Analyzing ICFG array-2.c [2020-10-20 00:53:30,466 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:53:30,474 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:53:30,489 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:53:30,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:53:30,524 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:53:30,524 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:53:30,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:53:30,525 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:53:30,525 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:53:30,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:53:30,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:53:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:53:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:53:30,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:53:30,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:53:30,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:53:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:53:30,560 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2020-10-20 00:53:30,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:53:30,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153791330] [2020-10-20 00:53:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:53:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:53:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:53:30,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153791330] [2020-10-20 00:53:30,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:53:30,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:53:30,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624557512] [2020-10-20 00:53:30,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:53:30,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:53:30,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:53:30,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:53:30,775 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-20 00:53:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:53:30,790 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-20 00:53:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:53:30,792 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-20 00:53:30,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:53:30,800 INFO L225 Difference]: With dead ends: 22 [2020-10-20 00:53:30,801 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 00:53:30,805 INFO L677 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 [2020-10-20 00:53:30,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 00:53:30,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 00:53:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 00:53:30,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-10-20 00:53:30,831 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2020-10-20 00:53:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:53:30,832 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-10-20 00:53:30,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:53:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-10-20 00:53:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:53:30,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:53:30,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:53:30,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:53:30,833 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:53:30,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:53:30,834 INFO L82 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times [2020-10-20 00:53:30,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:53:30,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046960759] [2020-10-20 00:53:30,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:53:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:53:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:53:30,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046960759] [2020-10-20 00:53:30,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:53:30,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:53:30,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876760597] [2020-10-20 00:53:30,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:53:30,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:53:30,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:53:30,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:53:30,979 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-10-20 00:53:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:53:31,004 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-10-20 00:53:31,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:53:31,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 00:53:31,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:53:31,005 INFO L225 Difference]: With dead ends: 16 [2020-10-20 00:53:31,005 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 00:53:31,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:53:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 00:53:31,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2020-10-20 00:53:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 00:53:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-10-20 00:53:31,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2020-10-20 00:53:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:53:31,011 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-10-20 00:53:31,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:53:31,011 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-10-20 00:53:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:53:31,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:53:31,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:53:31,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:53:31,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:53:31,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:53:31,013 INFO L82 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times [2020-10-20 00:53:31,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:53:31,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719198722] [2020-10-20 00:53:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:53:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:53:31,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:53:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:53:31,100 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:53:31,139 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:53:31,139 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:53:31,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:53:31,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:53:31 BoogieIcfgContainer [2020-10-20 00:53:31,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:53:31,185 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:53:31,185 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:53:31,186 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:53:31,186 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:53:30" (3/4) ... [2020-10-20 00:53:31,191 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:53:31,250 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:53:31,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:53:31,253 INFO L168 Benchmark]: Toolchain (without parser) took 1645.25 ms. Allocated memory was 36.2 MB in the beginning and 48.8 MB in the end (delta: 12.6 MB). Free memory was 15.2 MB in the beginning and 16.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:31,254 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 33.6 MB. Free memory was 8.3 MB in the beginning and 8.2 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:53:31,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.37 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 14.3 MB in the beginning and 25.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:31,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 44.6 MB. Free memory was 25.7 MB in the beginning and 23.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:31,256 INFO L168 Benchmark]: Boogie Preprocessor took 54.73 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 22.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:31,257 INFO L168 Benchmark]: RCFGBuilder took 295.24 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 22.4 MB in the beginning and 20.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:31,258 INFO L168 Benchmark]: TraceAbstraction took 739.85 ms. Allocated memory was 46.1 MB in the beginning and 48.8 MB in the end (delta: 2.6 MB). Free memory was 20.3 MB in the beginning and 18.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:31,259 INFO L168 Benchmark]: Witness Printer took 65.13 ms. Allocated memory is still 48.8 MB. Free memory was 18.6 MB in the beginning and 16.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:31,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 33.6 MB. Free memory was 8.3 MB in the beginning and 8.2 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 429.37 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 14.3 MB in the beginning and 25.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 44.6 MB. Free memory was 25.7 MB in the beginning and 23.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 54.73 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 22.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 295.24 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 22.4 MB in the beginning and 20.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 739.85 ms. Allocated memory was 46.1 MB in the beginning and 48.8 MB in the end (delta: 2.6 MB). Free memory was 20.3 MB in the beginning and 18.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. * Witness Printer took 65.13 ms. Allocated memory is still 48.8 MB. Free memory was 18.6 MB in the beginning and 16.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] unsigned int SIZE=1; [L16] unsigned int j,k; [L17] int array[SIZE], menor; [L19] menor = __VERIFIER_nondet_int() [L21] j=0 [L21] COND TRUE j