./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ms4f.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 8b1ff7c3d7f3c8cf245efdfe656c26c90ac88f02 ....................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 22:30:45,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:30:45,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:30:45,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:30:45,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:30:45,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:30:45,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:30:45,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:30:45,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:30:45,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:30:45,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:30:45,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:30:45,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:30:45,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:30:45,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:30:45,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:30:45,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:30:45,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:30:45,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:30:45,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:30:45,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:30:45,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:30:45,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:30:45,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:30:45,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:30:45,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:30:45,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:30:45,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:30:45,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:30:45,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:30:45,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:30:45,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:30:45,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:30:45,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:30:45,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:30:45,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:30:45,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:30:45,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:30:45,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:30:45,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:30:45,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:30:45,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:30:45,979 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:30:45,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:30:45,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:30:45,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:30:45,981 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:30:45,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:30:45,981 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:30:45,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:30:45,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:30:45,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:30:45,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:30:45,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:30:45,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:30:45,983 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:30:45,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:30:45,983 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:30:45,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:30:45,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:30:45,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:30:45,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:30:45,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:30:45,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:30:45,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:30:45,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:30:45,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:30:45,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:30:45,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:30:45,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:30:45,986 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 -> 8b1ff7c3d7f3c8cf245efdfe656c26c90ac88f02 [2019-11-27 22:30:46,296 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:30:46,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:30:46,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:30:46,314 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:30:46,315 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:30:46,316 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms4f.c [2019-11-27 22:30:46,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f4e4c6f/857fa39aee914dd19ae74f01d86b050f/FLAG706cc53cd [2019-11-27 22:30:46,855 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:30:46,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms4f.c [2019-11-27 22:30:46,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f4e4c6f/857fa39aee914dd19ae74f01d86b050f/FLAG706cc53cd [2019-11-27 22:30:47,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f4e4c6f/857fa39aee914dd19ae74f01d86b050f [2019-11-27 22:30:47,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:30:47,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:30:47,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:30:47,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:30:47,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:30:47,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46934c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47, skipping insertion in model container [2019-11-27 22:30:47,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:30:47,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:30:47,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:30:47,546 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:30:47,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:30:47,606 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:30:47,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47 WrapperNode [2019-11-27 22:30:47,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:30:47,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:30:47,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:30:47,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:30:47,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:30:47,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:30:47,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:30:47,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:30:47,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... [2019-11-27 22:30:47,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:30:47,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:30:47,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:30:47,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:30:47,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:30:47,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 22:30:47,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:30:47,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:30:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:30:47,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:30:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:30:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 22:30:48,109 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:30:48,109 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 22:30:48,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:30:48 BoogieIcfgContainer [2019-11-27 22:30:48,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:30:48,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:30:48,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:30:48,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:30:48,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:30:47" (1/3) ... [2019-11-27 22:30:48,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303b0ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:30:48, skipping insertion in model container [2019-11-27 22:30:48,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:47" (2/3) ... [2019-11-27 22:30:48,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303b0ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:30:48, skipping insertion in model container [2019-11-27 22:30:48,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:30:48" (3/3) ... [2019-11-27 22:30:48,140 INFO L109 eAbstractionObserver]: Analyzing ICFG ms4f.c [2019-11-27 22:30:48,161 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:30:48,170 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:30:48,183 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:30:48,212 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:30:48,212 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:30:48,213 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:30:48,213 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:30:48,213 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:30:48,213 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:30:48,213 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:30:48,213 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:30:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-27 22:30:48,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:30:48,240 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:48,241 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:48,242 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:48,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:48,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1476218026, now seen corresponding path program 1 times [2019-11-27 22:30:48,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:48,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535964232] [2019-11-27 22:30:48,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:30:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:30:48,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535964232] [2019-11-27 22:30:48,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:30:48,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:30:48,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478219294] [2019-11-27 22:30:48,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:30:48,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:30:48,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:30:48,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:30:48,414 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-27 22:30:48,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:30:48,428 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-27 22:30:48,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:30:48,429 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-27 22:30:48,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:30:48,437 INFO L225 Difference]: With dead ends: 29 [2019-11-27 22:30:48,437 INFO L226 Difference]: Without dead ends: 13 [2019-11-27 22:30:48,440 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:30:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-27 22:30:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-27 22:30:48,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-27 22:30:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-27 22:30:48,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-27 22:30:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:30:48,473 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-27 22:30:48,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:30:48,473 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-27 22:30:48,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:30:48,474 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:48,474 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:48,475 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:48,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:48,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1304115419, now seen corresponding path program 1 times [2019-11-27 22:30:48,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:48,476 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643770187] [2019-11-27 22:30:48,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:30:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:30:48,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643770187] [2019-11-27 22:30:48,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:30:48,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:30:48,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314867649] [2019-11-27 22:30:48,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:30:48,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:30:48,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:30:48,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:30:48,547 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-27 22:30:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:30:48,608 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-27 22:30:48,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:30:48,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-27 22:30:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:30:48,610 INFO L225 Difference]: With dead ends: 23 [2019-11-27 22:30:48,610 INFO L226 Difference]: Without dead ends: 15 [2019-11-27 22:30:48,611 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:30:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-27 22:30:48,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-27 22:30:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-27 22:30:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-27 22:30:48,616 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-27 22:30:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:30:48,616 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-27 22:30:48,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:30:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-27 22:30:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 22:30:48,618 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:48,618 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:48,618 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:48,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:48,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1358761923, now seen corresponding path program 1 times [2019-11-27 22:30:48,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:48,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519934719] [2019-11-27 22:30:48,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:30:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-27 22:30:48,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519934719] [2019-11-27 22:30:48,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:30:48,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 22:30:48,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709711401] [2019-11-27 22:30:48,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 22:30:48,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:30:48,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 22:30:48,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:30:48,684 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-27 22:30:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:30:48,745 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-11-27 22:30:48,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 22:30:48,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 22:30:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:30:48,746 INFO L225 Difference]: With dead ends: 25 [2019-11-27 22:30:48,747 INFO L226 Difference]: Without dead ends: 18 [2019-11-27 22:30:48,747 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:30:48,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-27 22:30:48,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-27 22:30:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-27 22:30:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-27 22:30:48,760 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2019-11-27 22:30:48,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:30:48,760 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-27 22:30:48,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 22:30:48,761 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-27 22:30:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 22:30:48,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:48,762 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:48,762 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:48,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:48,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1565637502, now seen corresponding path program 1 times [2019-11-27 22:30:48,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:48,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591946369] [2019-11-27 22:30:48,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:30:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:30:48,877 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:30:48,878 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:30:48,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:30:48 BoogieIcfgContainer [2019-11-27 22:30:48,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:30:48,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:30:48,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:30:48,911 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:30:48,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:30:48" (3/4) ... [2019-11-27 22:30:48,914 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:30:48,967 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:30:48,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:30:48,971 INFO L168 Benchmark]: Toolchain (without parser) took 1718.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -107.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:48,972 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 22:30:48,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.30 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:48,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:48,974 INFO L168 Benchmark]: Boogie Preprocessor took 51.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 22:30:48,975 INFO L168 Benchmark]: RCFGBuilder took 329.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:48,976 INFO L168 Benchmark]: TraceAbstraction took 788.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:48,976 INFO L168 Benchmark]: Witness Printer took 56.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 22:30:48,980 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 356.30 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 121.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 329.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 788.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. * Witness Printer took 56.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=1] [L26] COND TRUE i