./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i --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/veris.c_NetBSD-libc_loop.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63816408f16166958351bc134d9ad3d8551cdcd0 ................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:56:02,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:56:02,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:56:02,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:56:02,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:56:02,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:56:02,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:56:02,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:56:02,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:56:02,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:56:02,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:56:02,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:56:02,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:56:02,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:56:02,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:56:02,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:56:02,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:56:02,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:56:02,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:56:02,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:56:02,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:56:02,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:56:02,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:56:02,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:56:02,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:56:02,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:56:02,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:56:02,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:56:02,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:56:02,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:56:02,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:56:02,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:56:02,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:56:02,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:56:02,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:56:02,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:56:02,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:56:02,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:56:02,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:56:02,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:56:02,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:56:02,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:56:02,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:56:02,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:56:02,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:56:02,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:56:02,336 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:56:02,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:56:02,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:56:02,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:56:02,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:56:02,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:56:02,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:56:02,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:56:02,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:56:02,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:56:02,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:56:02,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:56:02,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:56:02,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:56:02,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:56:02,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:56:02,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:56:02,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:56:02,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:56:02,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:56:02,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:56:02,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:56:02,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:56:02,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:56:02,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:56:02,342 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 -> 63816408f16166958351bc134d9ad3d8551cdcd0 [2020-10-20 00:56:02,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:56:02,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:56:02,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:56:02,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:56:02,569 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:56:02,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2020-10-20 00:56:02,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af7daf62b/05b6a883e55f4cac81cf63bc98b330d6/FLAG641e8cde1 [2020-10-20 00:56:03,140 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:56:03,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2020-10-20 00:56:03,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af7daf62b/05b6a883e55f4cac81cf63bc98b330d6/FLAG641e8cde1 [2020-10-20 00:56:03,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af7daf62b/05b6a883e55f4cac81cf63bc98b330d6 [2020-10-20 00:56:03,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:56:03,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:56:03,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:56:03,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:56:03,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:56:03,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1876fda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03, skipping insertion in model container [2020-10-20 00:56:03,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:56:03,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:56:03,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:56:03,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:56:03,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:56:03,820 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:56:03,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03 WrapperNode [2020-10-20 00:56:03,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:56:03,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:56:03,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:56:03,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:56:03,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:56:03,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:56:03,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:56:03,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:56:03,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (1/1) ... [2020-10-20 00:56:03,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:56:03,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:56:03,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:56:03,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:56:03,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (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 00:56:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:56:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:56:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:56:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:56:03,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:56:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:56:04,188 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:56:04,188 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-20 00:56:04,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:56:04 BoogieIcfgContainer [2020-10-20 00:56:04,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:56:04,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:56:04,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:56:04,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:56:04,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:56:03" (1/3) ... [2020-10-20 00:56:04,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1436ca0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:56:04, skipping insertion in model container [2020-10-20 00:56:04,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:03" (2/3) ... [2020-10-20 00:56:04,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1436ca0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:56:04, skipping insertion in model container [2020-10-20 00:56:04,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:56:04" (3/3) ... [2020-10-20 00:56:04,199 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2020-10-20 00:56:04,212 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:56:04,219 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:56:04,239 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:56:04,268 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:56:04,269 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:56:04,269 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:56:04,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:56:04,270 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:56:04,270 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:56:04,270 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:56:04,271 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:56:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-20 00:56:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:56:04,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:56:04,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:56:04,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:56:04,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:56:04,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1809706186, now seen corresponding path program 1 times [2020-10-20 00:56:04,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:56:04,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819062792] [2020-10-20 00:56:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:56:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:56:04,590 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 00:56:04,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819062792] [2020-10-20 00:56:04,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:56:04,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:56:04,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757865853] [2020-10-20 00:56:04,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:56:04,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:56:04,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:56:04,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:56:04,615 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-10-20 00:56:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:56:04,758 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-10-20 00:56:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:56:04,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 00:56:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:56:04,787 INFO L225 Difference]: With dead ends: 38 [2020-10-20 00:56:04,788 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 00:56:04,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:56:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 00:56:04,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-10-20 00:56:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 00:56:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 00:56:04,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-10-20 00:56:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:56:04,839 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 00:56:04,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:56:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 00:56:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:56:04,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:56:04,841 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:56:04,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:56:04,844 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:56:04,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:56:04,845 INFO L82 PathProgramCache]: Analyzing trace with hash 2069720216, now seen corresponding path program 1 times [2020-10-20 00:56:04,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:56:04,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789510683] [2020-10-20 00:56:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:56:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:56:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:56:05,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789510683] [2020-10-20 00:56:05,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730708399] [2020-10-20 00:56:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:56:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:56:05,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 00:56:05,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:56:05,159 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:56:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:56:05,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:56:05,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-20 00:56:05,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658166008] [2020-10-20 00:56:05,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 00:56:05,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:56:05,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 00:56:05,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:56:05,196 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2020-10-20 00:56:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:56:05,263 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-20 00:56:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:56:05,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-20 00:56:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:56:05,265 INFO L225 Difference]: With dead ends: 23 [2020-10-20 00:56:05,265 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 00:56:05,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:56:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 00:56:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-10-20 00:56:05,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 00:56:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-20 00:56:05,272 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2020-10-20 00:56:05,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:56:05,273 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-20 00:56:05,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 00:56:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-20 00:56:05,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:56:05,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:56:05,274 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 00:56:05,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-20 00:56:05,488 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:56:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:56:05,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1134799514, now seen corresponding path program 2 times [2020-10-20 00:56:05,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:56:05,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2628358] [2020-10-20 00:56:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:56:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:56:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 00:56:05,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2628358] [2020-10-20 00:56:05,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535228985] [2020-10-20 00:56:05,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:56:05,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 00:56:05,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:56:05,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 00:56:05,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:56:05,723 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:56:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 00:56:05,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:56:05,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-20 00:56:05,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991178404] [2020-10-20 00:56:05,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:56:05,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:56:05,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:56:05,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:56:05,743 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-10-20 00:56:05,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:56:05,781 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-20 00:56:05,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:56:05,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 00:56:05,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:56:05,782 INFO L225 Difference]: With dead ends: 16 [2020-10-20 00:56:05,782 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:56:05,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:56:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:56:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:56:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:56:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:56:05,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-20 00:56:05,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:56:05,784 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:56:05,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:56:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:56:05,784 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:56:05,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:56:05,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:56:06,111 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:56:06,111 INFO L274 CegarLoopResult]: For program point L29-2(lines 29 33) no Hoare annotation was computed. [2020-10-20 00:56:06,112 INFO L270 CegarLoopResult]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base)) (.cse1 (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base)) (.cse2 (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 .cse2) (and (= ULTIMATE.start_glob2_~p~0.offset 0) (<= 4 ~tmp~0.offset) .cse0 .cse1 .cse2))) [2020-10-20 00:56:06,112 INFO L274 CegarLoopResult]: For program point L29-4(lines 29 33) no Hoare annotation was computed. [2020-10-20 00:56:06,112 INFO L270 CegarLoopResult]: At program point L48(lines 38 49) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (and (= ULTIMATE.start_glob2_~p~0.offset 0) (<= 4 ~tmp~0.offset) (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base))) [2020-10-20 00:56:06,112 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-10-20 00:56:06,112 INFO L270 CegarLoopResult]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base) (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base) (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset)) [2020-10-20 00:56:06,113 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:56:06,113 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:56:06,113 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:56:06,113 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 00:56:06,113 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-20 00:56:06,113 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-20 00:56:06,113 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-20 00:56:06,114 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-20 00:56:06,114 INFO L270 CegarLoopResult]: At program point L35(lines 25 36) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (and (= ULTIMATE.start_glob2_~p~0.offset 0) (<= 4 ~tmp~0.offset) (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base))) [2020-10-20 00:56:06,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:56:06 BoogieIcfgContainer [2020-10-20 00:56:06,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:56:06,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:56:06,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:56:06,136 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:56:06,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:56:04" (3/4) ... [2020-10-20 00:56:06,140 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:56:06,150 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 00:56:06,151 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 00:56:06,151 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:56:06,151 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:56:06,209 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:56:06,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:56:06,212 INFO L168 Benchmark]: Toolchain (without parser) took 2660.89 ms. Allocated memory was 41.4 MB in the beginning and 48.2 MB in the end (delta: 6.8 MB). Free memory was 19.5 MB in the beginning and 20.1 MB in the end (delta: -608.1 kB). Peak memory consumption was 6.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:06,213 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 32.0 MB. Free memory was 9.0 MB in the beginning and 8.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:56:06,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.20 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 18.6 MB in the beginning and 20.3 MB in the end (delta: -1.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:06,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.87 ms. Allocated memory is still 41.9 MB. Free memory was 20.1 MB in the beginning and 18.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:06,215 INFO L168 Benchmark]: Boogie Preprocessor took 25.18 ms. Allocated memory is still 41.9 MB. Free memory was 18.4 MB in the beginning and 17.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:06,216 INFO L168 Benchmark]: RCFGBuilder took 305.86 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 17.1 MB in the beginning and 20.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:06,217 INFO L168 Benchmark]: TraceAbstraction took 1943.48 ms. Allocated memory was 43.5 MB in the beginning and 48.2 MB in the end (delta: 4.7 MB). Free memory was 20.1 MB in the beginning and 23.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:06,217 INFO L168 Benchmark]: Witness Printer took 73.79 ms. Allocated memory is still 48.2 MB. Free memory was 23.4 MB in the beginning and 20.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:06,222 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 32.0 MB. Free memory was 9.0 MB in the beginning and 8.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 264.20 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 18.6 MB in the beginning and 20.3 MB in the end (delta: -1.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.87 ms. Allocated memory is still 41.9 MB. Free memory was 20.1 MB in the beginning and 18.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.18 ms. Allocated memory is still 41.9 MB. Free memory was 18.4 MB in the beginning and 17.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 305.86 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 17.1 MB in the beginning and 20.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1943.48 ms. Allocated memory was 43.5 MB in the beginning and 48.2 MB in the end (delta: 4.7 MB). Free memory was 20.1 MB in the beginning and 23.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. * Witness Printer took 73.79 ms. Allocated memory is still 48.2 MB. Free memory was 23.4 MB in the beginning and 20.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 29]: Loop Invariant Derived loop invariant: (((1 <= cond && pathlim == tmp) && tmp == p) && pathlim <= tmp) || ((((p == 0 && 4 <= tmp) && pathlim == tmp) && tmp == p) && pathlim <= tmp) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: !(0 == cond) || ((p == 0 && 4 <= tmp) && tmp == p) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((1 <= cond && pathlim == tmp) && tmp == p) && pathlim <= tmp - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: !(0 == cond) || ((p == 0 && 4 <= tmp) && tmp == p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 32 SDslu, 41 SDs, 0 SdLazy, 39 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 73 HoareAnnotationTreeSize, 4 FomulaSimplifications, 118 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 3132 SizeOfPredicates, 26 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 12/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...