./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss4f.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/ss4f.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 472d526e06bbbe69053cd88ae1a22567295f2fd5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-8bd4bc6 [2020-07-28 14:57:53,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:57:53,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:57:53,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:57:53,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:57:53,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:57:53,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:57:53,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:57:53,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:57:53,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:57:53,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:57:53,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:57:53,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:57:53,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:57:53,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:57:53,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:57:53,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:57:53,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:57:53,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:57:53,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:57:53,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:57:53,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:57:53,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:57:53,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:57:53,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:57:53,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:57:53,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:57:53,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:57:53,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:57:53,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:57:53,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:57:53,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:57:53,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:57:53,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:57:53,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:57:53,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:57:53,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:57:53,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:57:53,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:57:53,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:57:53,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:57:53,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:57:53,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:57:53,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:57:53,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:57:53,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:57:53,259 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:57:53,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:57:53,260 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:57:53,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:57:53,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:57:53,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:57:53,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:57:53,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:57:53,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:57:53,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:57:53,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:57:53,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:57:53,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:57:53,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:57:53,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:57:53,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:57:53,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:57:53,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:57:53,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:57:53,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:57:53,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:57:53,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:57:53,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:57:53,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:57:53,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:57:53,266 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 -> 472d526e06bbbe69053cd88ae1a22567295f2fd5 [2020-07-28 14:57:53,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:57:53,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:57:53,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:57:53,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:57:53,591 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:57:53,592 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss4f.c [2020-07-28 14:57:53,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8b8c980/d88e9d31d4214e98bae5fc37498bbe69/FLAG665445faa [2020-07-28 14:57:54,069 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:57:54,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss4f.c [2020-07-28 14:57:54,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8b8c980/d88e9d31d4214e98bae5fc37498bbe69/FLAG665445faa [2020-07-28 14:57:54,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8b8c980/d88e9d31d4214e98bae5fc37498bbe69 [2020-07-28 14:57:54,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:57:54,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:57:54,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:57:54,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:57:54,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:57:54,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674049d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54, skipping insertion in model container [2020-07-28 14:57:54,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:57:54,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:57:54,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:57:54,720 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:57:54,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:57:54,793 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:57:54,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54 WrapperNode [2020-07-28 14:57:54,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:57:54,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:57:54,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:57:54,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:57:54,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:57:54,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:57:54,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:57:54,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:57:54,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (1/1) ... [2020-07-28 14:57:54,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:57:54,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:57:54,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:57:54,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:57:54,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (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 [2020-07-28 14:57:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 14:57:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:57:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:57:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:57:55,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:57:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:57:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 14:57:55,435 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:57:55,435 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-07-28 14:57:55,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:55 BoogieIcfgContainer [2020-07-28 14:57:55,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:57:55,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:57:55,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:57:55,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:57:55,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:57:54" (1/3) ... [2020-07-28 14:57:55,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48149dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:57:55, skipping insertion in model container [2020-07-28 14:57:55,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:54" (2/3) ... [2020-07-28 14:57:55,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48149dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:57:55, skipping insertion in model container [2020-07-28 14:57:55,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:55" (3/3) ... [2020-07-28 14:57:55,452 INFO L109 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-07-28 14:57:55,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:57:55,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:57:55,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:57:55,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:57:55,542 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:57:55,543 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:57:55,543 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:57:55,543 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:57:55,543 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:57:55,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:57:55,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:57:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-28 14:57:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 14:57:55,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:55,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:57:55,600 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:55,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:55,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2020-07-28 14:57:55,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:55,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747589917] [2020-07-28 14:57:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:57:55,785 INFO L280 TraceCheckUtils]: 0: Hoare triple {27#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {27#true} is VALID [2020-07-28 14:57:55,786 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~mem5, main_#t~post3, main_#t~mem7, main_#t~mem8, main_#t~post6, main_#t~mem10, main_#t~mem11, main_#t~post9, main_#t~mem12, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {27#true} is VALID [2020-07-28 14:57:55,786 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {27#true} is VALID [2020-07-28 14:57:55,787 INFO L280 TraceCheckUtils]: 3: Hoare triple {27#true} assume 0 == assume_abort_if_not_~cond;assume false; {28#false} is VALID [2020-07-28 14:57:55,788 INFO L280 TraceCheckUtils]: 4: Hoare triple {28#false} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call write~int(0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:57:55,788 INFO L280 TraceCheckUtils]: 5: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:57:55,788 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:57:55,789 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:57:55,789 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:57:55,791 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:57:55,791 INFO L280 TraceCheckUtils]: 10: Hoare triple {28#false} call write~int(~N~0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:57:55,792 INFO L280 TraceCheckUtils]: 11: Hoare triple {28#false} assume !true; {28#false} is VALID [2020-07-28 14:57:55,792 INFO L280 TraceCheckUtils]: 12: Hoare triple {28#false} call main_#t~mem12 := read~int(main_~#sum~0.base, main_~#sum~0.offset, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem12 == ~N~0 * (1 + ~N~0) then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {28#false} is VALID [2020-07-28 14:57:55,793 INFO L280 TraceCheckUtils]: 13: Hoare triple {28#false} assume 0 == __VERIFIER_assert_~cond; {28#false} is VALID [2020-07-28 14:57:55,794 INFO L280 TraceCheckUtils]: 14: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-28 14:57:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:57:55,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747589917] [2020-07-28 14:57:55,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:57:55,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:57:55,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259488187] [2020-07-28 14:57:55,807 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-28 14:57:55,809 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:57:55,813 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:57:55,849 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:55,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:57:55,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:57:55,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:57:55,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:57:55,863 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-07-28 14:57:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:55,933 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2020-07-28 14:57:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:57:55,933 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-28 14:57:55,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:57:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:57:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2020-07-28 14:57:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:57:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2020-07-28 14:57:55,950 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 62 transitions. [2020-07-28 14:57:56,052 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:56,065 INFO L225 Difference]: With dead ends: 44 [2020-07-28 14:57:56,066 INFO L226 Difference]: Without dead ends: 20 [2020-07-28 14:57:56,070 INFO L675 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 [2020-07-28 14:57:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-28 14:57:56,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-28 14:57:56,107 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:57:56,108 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 20 states. [2020-07-28 14:57:56,109 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 14:57:56,109 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 14:57:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:56,112 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 14:57:56,113 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:57:56,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:56,114 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:56,114 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 14:57:56,114 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 14:57:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:56,117 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 14:57:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:57:56,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:56,118 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:56,118 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:57:56,119 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:57:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-28 14:57:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-07-28 14:57:56,123 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2020-07-28 14:57:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:57:56,125 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-07-28 14:57:56,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:57:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:57:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 14:57:56,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:56,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:57:56,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:57:56,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:56,131 INFO L82 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2020-07-28 14:57:56,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:56,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117814458] [2020-07-28 14:57:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:57:56,293 INFO L280 TraceCheckUtils]: 0: Hoare triple {149#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {149#true} is VALID [2020-07-28 14:57:56,294 INFO L280 TraceCheckUtils]: 1: Hoare triple {149#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~mem5, main_#t~post3, main_#t~mem7, main_#t~mem8, main_#t~post6, main_#t~mem10, main_#t~mem11, main_#t~post9, main_#t~mem12, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {149#true} is VALID [2020-07-28 14:57:56,295 INFO L280 TraceCheckUtils]: 2: Hoare triple {149#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {151#(<= 1 ~N~0)} is VALID [2020-07-28 14:57:56,296 INFO L280 TraceCheckUtils]: 3: Hoare triple {151#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {151#(<= 1 ~N~0)} is VALID [2020-07-28 14:57:56,298 INFO L280 TraceCheckUtils]: 4: Hoare triple {151#(<= 1 ~N~0)} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call write~int(0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {152#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:57:56,300 INFO L280 TraceCheckUtils]: 5: Hoare triple {152#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:57:56,300 INFO L280 TraceCheckUtils]: 6: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:57:56,300 INFO L280 TraceCheckUtils]: 7: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:57:56,301 INFO L280 TraceCheckUtils]: 8: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:57:56,301 INFO L280 TraceCheckUtils]: 9: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:57:56,302 INFO L280 TraceCheckUtils]: 10: Hoare triple {150#false} call write~int(~N~0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:57:56,302 INFO L280 TraceCheckUtils]: 11: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:57:56,302 INFO L280 TraceCheckUtils]: 12: Hoare triple {150#false} call main_#t~mem12 := read~int(main_~#sum~0.base, main_~#sum~0.offset, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem12 == ~N~0 * (1 + ~N~0) then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {150#false} is VALID [2020-07-28 14:57:56,303 INFO L280 TraceCheckUtils]: 13: Hoare triple {150#false} assume 0 == __VERIFIER_assert_~cond; {150#false} is VALID [2020-07-28 14:57:56,303 INFO L280 TraceCheckUtils]: 14: Hoare triple {150#false} assume !false; {150#false} is VALID [2020-07-28 14:57:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:57:56,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117814458] [2020-07-28 14:57:56,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:57:56,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:57:56,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144073493] [2020-07-28 14:57:56,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-28 14:57:56,309 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:57:56,309 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:57:56,337 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:56,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:57:56,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:57:56,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:57:56,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:57:56,339 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-07-28 14:57:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:56,507 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-07-28 14:57:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:57:56,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-28 14:57:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:57:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:57:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2020-07-28 14:57:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:57:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2020-07-28 14:57:56,513 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 50 transitions. [2020-07-28 14:57:56,586 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:56,588 INFO L225 Difference]: With dead ends: 41 [2020-07-28 14:57:56,588 INFO L226 Difference]: Without dead ends: 28 [2020-07-28 14:57:56,589 INFO L675 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 [2020-07-28 14:57:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-28 14:57:56,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-07-28 14:57:56,606 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:57:56,606 INFO L82 GeneralOperation]: Start isEquivalent. First operand 28 states. Second operand 24 states. [2020-07-28 14:57:56,607 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 24 states. [2020-07-28 14:57:56,607 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 24 states. [2020-07-28 14:57:56,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:56,610 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-07-28 14:57:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-28 14:57:56,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:56,611 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:56,611 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 28 states. [2020-07-28 14:57:56,611 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 28 states. [2020-07-28 14:57:56,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:56,615 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-07-28 14:57:56,615 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-28 14:57:56,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:56,616 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:56,616 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:57:56,616 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:57:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-28 14:57:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-07-28 14:57:56,619 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-07-28 14:57:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:57:56,620 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-07-28 14:57:56,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:57:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-07-28 14:57:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-28 14:57:56,621 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:56,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:57:56,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:57:56,622 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:56,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2020-07-28 14:57:56,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:56,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486460436] [2020-07-28 14:57:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:56,661 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-28 14:57:56,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602487956] [2020-07-28 14:57:56,663 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 [2020-07-28 14:57:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:57:56,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:57:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:57:56,759 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:57:56,793 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:57:56,794 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:57:57,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-28 14:57:57,080 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:57:57,080 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:57:57,080 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:57:57,081 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:57:57,081 WARN L170 areAnnotationChecker]: L52 has no Hoare annotation [2020-07-28 14:57:57,081 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:57:57,081 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:57:57,082 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:57:57,082 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:57:57,082 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-28 14:57:57,082 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-28 14:57:57,082 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-28 14:57:57,082 WARN L170 areAnnotationChecker]: L30-4 has no Hoare annotation [2020-07-28 14:57:57,083 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-28 14:57:57,083 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-28 14:57:57,083 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-28 14:57:57,083 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-28 14:57:57,083 WARN L170 areAnnotationChecker]: L35-4 has no Hoare annotation [2020-07-28 14:57:57,083 WARN L170 areAnnotationChecker]: L35-2 has no Hoare annotation [2020-07-28 14:57:57,084 WARN L170 areAnnotationChecker]: L40-3 has no Hoare annotation [2020-07-28 14:57:57,084 WARN L170 areAnnotationChecker]: L40-3 has no Hoare annotation [2020-07-28 14:57:57,084 WARN L170 areAnnotationChecker]: L40-3 has no Hoare annotation [2020-07-28 14:57:57,084 WARN L170 areAnnotationChecker]: L40-4 has no Hoare annotation [2020-07-28 14:57:57,084 WARN L170 areAnnotationChecker]: L40-2 has no Hoare annotation [2020-07-28 14:57:57,084 WARN L170 areAnnotationChecker]: L46-3 has no Hoare annotation [2020-07-28 14:57:57,085 WARN L170 areAnnotationChecker]: L46-3 has no Hoare annotation [2020-07-28 14:57:57,085 WARN L170 areAnnotationChecker]: L46-3 has no Hoare annotation [2020-07-28 14:57:57,085 WARN L170 areAnnotationChecker]: L46-4 has no Hoare annotation [2020-07-28 14:57:57,086 WARN L170 areAnnotationChecker]: L46-2 has no Hoare annotation [2020-07-28 14:57:57,086 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:57:57,086 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:57:57,086 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:57:57,086 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:57:57,087 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:57:57,087 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 14:57:57,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:57:57 BoogieIcfgContainer [2020-07-28 14:57:57,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:57:57,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:57:57,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:57:57,097 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:57:57,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:55" (3/4) ... [2020-07-28 14:57:57,100 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:57:57,228 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:57:57,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:57:57,233 INFO L168 Benchmark]: Toolchain (without parser) took 2793.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 949.5 MB in the beginning and 1.0 GB in the end (delta: -58.6 MB). Peak memory consumption was 110.3 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:57,233 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:57:57,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.49 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 938.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:57,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 147.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 938.8 MB in the beginning and 1.2 GB in the end (delta: -219.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:57,241 INFO L168 Benchmark]: Boogie Preprocessor took 34.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:57:57,242 INFO L168 Benchmark]: RCFGBuilder took 461.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:57,242 INFO L168 Benchmark]: TraceAbstraction took 1653.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 124.7 MB). Peak memory consumption was 124.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:57,247 INFO L168 Benchmark]: Witness Printer took 132.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:57:57,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 354.49 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 938.8 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 147.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 938.8 MB in the beginning and 1.2 GB in the end (delta: -219.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 461.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1653.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 124.7 MB). Peak memory consumption was 124.7 MB. Max. memory is 11.5 GB. * Witness Printer took 132.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L11] COND FALSE !(!cond) VAL [N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [N=1] [L30] COND TRUE i