./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s5iff.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/s5iff.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 5d662f2c632ccbb4b04c793697535912f2bd9ed9 .......................................................................................................................................................................................................................................................................................................................................................................... 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 22:32:18,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:32:18,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:32:18,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:32:18,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:32:18,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:32:18,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:32:18,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:32:18,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:32:18,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:32:18,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:32:18,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:32:18,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:32:18,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:32:18,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:32:18,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:32:18,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:32:18,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:32:18,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:32:18,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:32:18,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:32:18,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:32:18,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:32:18,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:32:18,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:32:18,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:32:18,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:32:18,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:32:18,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:32:18,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:32:18,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:32:18,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:32:18,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:32:18,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:32:18,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:32:18,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:32:18,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:32:18,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:32:18,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:32:18,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:32:18,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:32:18,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:32:19,005 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:32:19,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:32:19,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:32:19,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:32:19,008 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:32:19,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:32:19,008 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:32:19,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:32:19,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:32:19,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:32:19,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:32:19,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:32:19,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:32:19,011 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:32:19,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:32:19,012 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:32:19,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:32:19,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:32:19,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:32:19,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:32:19,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:32:19,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:32:19,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:32:19,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:32:19,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:32:19,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:32:19,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:32:19,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:32:19,015 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 -> 5d662f2c632ccbb4b04c793697535912f2bd9ed9 [2019-11-27 22:32:19,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:32:19,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:32:19,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:32:19,378 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:32:19,379 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:32:19,380 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s5iff.c [2019-11-27 22:32:19,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2e3364fb/6678393255204a36824c56a205c0e0a2/FLAGf75d2f778 [2019-11-27 22:32:19,931 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:32:19,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s5iff.c [2019-11-27 22:32:19,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2e3364fb/6678393255204a36824c56a205c0e0a2/FLAGf75d2f778 [2019-11-27 22:32:20,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2e3364fb/6678393255204a36824c56a205c0e0a2 [2019-11-27 22:32:20,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:32:20,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:32:20,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:32:20,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:32:20,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:32:20,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f1a05dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20, skipping insertion in model container [2019-11-27 22:32:20,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:32:20,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:32:20,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:32:20,564 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:32:20,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:32:20,609 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:32:20,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20 WrapperNode [2019-11-27 22:32:20,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:32:20,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:32:20,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:32:20,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:32:20,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:32:20,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:32:20,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:32:20,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:32:20,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (1/1) ... [2019-11-27 22:32:20,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:32:20,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:32:20,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:32:20,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:32:20,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (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 22:32:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 22:32:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:32:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:32:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:32:20,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:32:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:32:20,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 22:32:21,137 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:32:21,137 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 22:32:21,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:32:21 BoogieIcfgContainer [2019-11-27 22:32:21,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:32:21,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:32:21,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:32:21,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:32:21,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:32:20" (1/3) ... [2019-11-27 22:32:21,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9bf1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:32:21, skipping insertion in model container [2019-11-27 22:32:21,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:20" (2/3) ... [2019-11-27 22:32:21,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9bf1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:32:21, skipping insertion in model container [2019-11-27 22:32:21,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:32:21" (3/3) ... [2019-11-27 22:32:21,149 INFO L109 eAbstractionObserver]: Analyzing ICFG s5iff.c [2019-11-27 22:32:21,160 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:32:21,168 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:32:21,198 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:32:21,221 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:32:21,221 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:32:21,222 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:32:21,222 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:32:21,222 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:32:21,222 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:32:21,222 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:32:21,223 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:32:21,235 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-27 22:32:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:32:21,241 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:32:21,242 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:32:21,242 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:32:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:32:21,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1476218026, now seen corresponding path program 1 times [2019-11-27 22:32:21,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:32:21,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871812144] [2019-11-27 22:32:21,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:32:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:32:21,387 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 22:32:21,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871812144] [2019-11-27 22:32:21,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:32:21,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:32:21,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187528018] [2019-11-27 22:32:21,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:32:21,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:32:21,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:32:21,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:32:21,410 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-27 22:32:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:32:21,425 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-27 22:32:21,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:32:21,426 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-27 22:32:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:32:21,435 INFO L225 Difference]: With dead ends: 29 [2019-11-27 22:32:21,435 INFO L226 Difference]: Without dead ends: 13 [2019-11-27 22:32:21,438 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 22:32:21,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-27 22:32:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-27 22:32:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-27 22:32:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-27 22:32:21,481 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-27 22:32:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:32:21,483 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-27 22:32:21,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:32:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-27 22:32:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:32:21,484 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:32:21,484 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:32:21,485 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:32:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:32:21,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1304115419, now seen corresponding path program 1 times [2019-11-27 22:32:21,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:32:21,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907870362] [2019-11-27 22:32:21,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:32:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:32:21,600 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 22:32:21,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907870362] [2019-11-27 22:32:21,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:32:21,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:32:21,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871129309] [2019-11-27 22:32:21,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:32:21,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:32:21,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:32:21,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:32:21,605 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-27 22:32:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:32:21,643 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-27 22:32:21,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:32:21,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-27 22:32:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:32:21,645 INFO L225 Difference]: With dead ends: 23 [2019-11-27 22:32:21,645 INFO L226 Difference]: Without dead ends: 15 [2019-11-27 22:32:21,646 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 22:32:21,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-27 22:32:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-27 22:32:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-27 22:32:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-27 22:32:21,652 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-27 22:32:21,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:32:21,652 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-27 22:32:21,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:32:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-27 22:32:21,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 22:32:21,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:32:21,654 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:32:21,654 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:32:21,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:32:21,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1358761923, now seen corresponding path program 1 times [2019-11-27 22:32:21,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:32:21,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970838927] [2019-11-27 22:32:21,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:32:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:32:21,710 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 22:32:21,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970838927] [2019-11-27 22:32:21,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:32:21,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 22:32:21,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801771977] [2019-11-27 22:32:21,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 22:32:21,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:32:21,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 22:32:21,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:32:21,713 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-27 22:32:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:32:21,762 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-27 22:32:21,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 22:32:21,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 22:32:21,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:32:21,764 INFO L225 Difference]: With dead ends: 22 [2019-11-27 22:32:21,764 INFO L226 Difference]: Without dead ends: 18 [2019-11-27 22:32:21,765 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 22:32:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-27 22:32:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-11-27 22:32:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-27 22:32:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-27 22:32:21,770 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-11-27 22:32:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:32:21,771 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-27 22:32:21,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 22:32:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-27 22:32:21,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 22:32:21,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:32:21,772 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:32:21,773 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:32:21,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:32:21,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1565637502, now seen corresponding path program 1 times [2019-11-27 22:32:21,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:32:21,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629475002] [2019-11-27 22:32:21,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:32:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:32:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:32:21,893 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:32:21,894 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:32:21,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:32:21 BoogieIcfgContainer [2019-11-27 22:32:21,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:32:21,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:32:21,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:32:21,931 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:32:21,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:32:21" (3/4) ... [2019-11-27 22:32:21,934 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:32:21,991 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:32:21,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:32:21,995 INFO L168 Benchmark]: Toolchain (without parser) took 1691.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -104.7 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:21,996 INFO L168 Benchmark]: CDTParser took 0.30 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 22:32:21,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.98 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 22:32:21,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:21,998 INFO L168 Benchmark]: Boogie Preprocessor took 60.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:21,999 INFO L168 Benchmark]: RCFGBuilder took 349.23 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: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:22,000 INFO L168 Benchmark]: TraceAbstraction took 789.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:22,001 INFO L168 Benchmark]: Witness Printer took 61.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:22,005 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 307.98 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 115.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 349.23 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: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 789.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. * Witness Printer took 61.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] sum[0] = 1 [L27] i=0 VAL [N=1] [L27] COND TRUE i