./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 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/ms2f.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 011d5e8b3a99c6a02328fd9641e7f45fe0553c1b ....................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-19 20:50:05,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 20:50:05,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 20:50:06,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 20:50:06,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 20:50:06,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 20:50:06,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 20:50:06,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 20:50:06,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 20:50:06,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 20:50:06,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 20:50:06,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 20:50:06,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 20:50:06,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 20:50:06,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 20:50:06,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 20:50:06,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 20:50:06,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 20:50:06,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 20:50:06,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 20:50:06,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 20:50:06,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 20:50:06,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 20:50:06,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 20:50:06,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 20:50:06,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 20:50:06,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 20:50:06,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 20:50:06,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 20:50:06,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 20:50:06,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 20:50:06,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 20:50:06,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 20:50:06,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 20:50:06,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 20:50:06,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 20:50:06,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 20:50:06,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 20:50:06,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 20:50:06,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 20:50:06,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 20:50:06,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 20:50:06,108 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 20:50:06,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 20:50:06,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 20:50:06,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 20:50:06,110 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 20:50:06,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 20:50:06,111 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 20:50:06,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 20:50:06,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 20:50:06,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 20:50:06,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 20:50:06,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 20:50:06,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 20:50:06,112 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 20:50:06,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 20:50:06,113 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 20:50:06,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 20:50:06,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 20:50:06,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 20:50:06,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 20:50:06,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 20:50:06,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 20:50:06,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 20:50:06,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 20:50:06,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 20:50:06,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 20:50:06,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 20:50:06,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 20:50:06,116 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 -> 011d5e8b3a99c6a02328fd9641e7f45fe0553c1b [2019-11-19 20:50:06,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 20:50:06,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 20:50:06,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 20:50:06,428 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 20:50:06,428 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 20:50:06,430 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms2f.c [2019-11-19 20:50:06,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4caaea5dc/55a4420550184758837aa349269aa671/FLAGa1413ea4a [2019-11-19 20:50:06,974 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 20:50:06,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms2f.c [2019-11-19 20:50:06,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4caaea5dc/55a4420550184758837aa349269aa671/FLAGa1413ea4a [2019-11-19 20:50:07,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4caaea5dc/55a4420550184758837aa349269aa671 [2019-11-19 20:50:07,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 20:50:07,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 20:50:07,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 20:50:07,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 20:50:07,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 20:50:07,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc3e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07, skipping insertion in model container [2019-11-19 20:50:07,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,363 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 20:50:07,381 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 20:50:07,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:50:07,587 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 20:50:07,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:50:07,618 INFO L192 MainTranslator]: Completed translation [2019-11-19 20:50:07,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07 WrapperNode [2019-11-19 20:50:07,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 20:50:07,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 20:50:07,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 20:50:07,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 20:50:07,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 20:50:07,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 20:50:07,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 20:50:07,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 20:50:07,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (1/1) ... [2019-11-19 20:50:07,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 20:50:07,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 20:50:07,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 20:50:07,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 20:50:07,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (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 [2019-11-19 20:50:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 20:50:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 20:50:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 20:50:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 20:50:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 20:50:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 20:50:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 20:50:08,065 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 20:50:08,066 INFO L285 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-19 20:50:08,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:50:08 BoogieIcfgContainer [2019-11-19 20:50:08,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 20:50:08,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 20:50:08,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 20:50:08,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 20:50:08,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:50:07" (1/3) ... [2019-11-19 20:50:08,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15433d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:50:08, skipping insertion in model container [2019-11-19 20:50:08,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:07" (2/3) ... [2019-11-19 20:50:08,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15433d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:50:08, skipping insertion in model container [2019-11-19 20:50:08,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:50:08" (3/3) ... [2019-11-19 20:50:08,077 INFO L109 eAbstractionObserver]: Analyzing ICFG ms2f.c [2019-11-19 20:50:08,087 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 20:50:08,094 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 20:50:08,114 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 20:50:08,133 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 20:50:08,133 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 20:50:08,134 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 20:50:08,134 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 20:50:08,134 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 20:50:08,134 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 20:50:08,134 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 20:50:08,135 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 20:50:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-19 20:50:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 20:50:08,152 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:08,153 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:08,154 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:08,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:08,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1476218026, now seen corresponding path program 1 times [2019-11-19 20:50:08,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:08,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491341493] [2019-11-19 20:50:08,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:50:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:50:08,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491341493] [2019-11-19 20:50:08,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:50:08,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 20:50:08,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737838721] [2019-11-19 20:50:08,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 20:50:08,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:50:08,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 20:50:08,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 20:50:08,299 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-19 20:50:08,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:50:08,313 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-19 20:50:08,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 20:50:08,314 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-19 20:50:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:50:08,321 INFO L225 Difference]: With dead ends: 29 [2019-11-19 20:50:08,321 INFO L226 Difference]: Without dead ends: 13 [2019-11-19 20:50:08,324 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 [2019-11-19 20:50:08,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-19 20:50:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-19 20:50:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-19 20:50:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-19 20:50:08,354 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-19 20:50:08,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:50:08,354 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-19 20:50:08,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 20:50:08,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-19 20:50:08,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 20:50:08,356 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:08,356 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:08,356 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:08,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:08,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1304115419, now seen corresponding path program 1 times [2019-11-19 20:50:08,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:08,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128635225] [2019-11-19 20:50:08,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:50:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:50:08,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128635225] [2019-11-19 20:50:08,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:50:08,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 20:50:08,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259576047] [2019-11-19 20:50:08,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 20:50:08,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:50:08,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 20:50:08,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 20:50:08,427 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-19 20:50:08,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:50:08,491 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-19 20:50:08,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 20:50:08,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-19 20:50:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:50:08,493 INFO L225 Difference]: With dead ends: 23 [2019-11-19 20:50:08,493 INFO L226 Difference]: Without dead ends: 15 [2019-11-19 20:50:08,494 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 [2019-11-19 20:50:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-19 20:50:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-19 20:50:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-19 20:50:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-19 20:50:08,498 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-19 20:50:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:50:08,499 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-19 20:50:08,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 20:50:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-19 20:50:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 20:50:08,499 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:08,500 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:08,502 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:08,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:08,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1358761923, now seen corresponding path program 1 times [2019-11-19 20:50:08,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:08,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065469358] [2019-11-19 20:50:08,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:50:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 20:50:08,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065469358] [2019-11-19 20:50:08,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:50:08,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 20:50:08,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431611603] [2019-11-19 20:50:08,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 20:50:08,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:50:08,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 20:50:08,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 20:50:08,591 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-19 20:50:08,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:50:08,637 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-11-19 20:50:08,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 20:50:08,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-19 20:50:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:50:08,639 INFO L225 Difference]: With dead ends: 25 [2019-11-19 20:50:08,639 INFO L226 Difference]: Without dead ends: 18 [2019-11-19 20:50:08,639 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 [2019-11-19 20:50:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-19 20:50:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-19 20:50:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-19 20:50:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-19 20:50:08,644 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2019-11-19 20:50:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:50:08,645 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-19 20:50:08,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 20:50:08,645 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-19 20:50:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 20:50:08,646 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:08,646 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:08,647 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:08,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:08,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1565637502, now seen corresponding path program 1 times [2019-11-19 20:50:08,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:08,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208059619] [2019-11-19 20:50:08,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:50:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:50:08,758 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:50:08,758 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 20:50:08,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:50:08 BoogieIcfgContainer [2019-11-19 20:50:08,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 20:50:08,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 20:50:08,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 20:50:08,788 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 20:50:08,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:50:08" (3/4) ... [2019-11-19 20:50:08,790 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 20:50:08,845 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 20:50:08,845 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 20:50:08,847 INFO L168 Benchmark]: Toolchain (without parser) took 1500.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -109.5 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:08,848 INFO L168 Benchmark]: CDTParser took 0.32 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. [2019-11-19 20:50:08,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.36 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. [2019-11-19 20:50:08,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:08,850 INFO L168 Benchmark]: Boogie Preprocessor took 36.57 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:08,851 INFO L168 Benchmark]: RCFGBuilder took 312.45 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:08,852 INFO L168 Benchmark]: TraceAbstraction took 718.52 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:08,853 INFO L168 Benchmark]: Witness Printer took 57.82 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:08,859 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 271.36 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 98.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.57 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 312.45 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 718.52 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. * Witness Printer took 57.82 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: 6.5 MB). Peak memory consumption was 6.5 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] int sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=1] [L26] COND TRUE i