./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms5f.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/ms5f.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 be1da8315ac927f943be98e64c3bee4508d9131b ....................................................................................................................................................................................................................................................................................................................................................................... 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 22:30:51,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:30:51,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:30:51,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:30:51,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:30:51,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:30:51,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:30:51,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:30:51,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:30:51,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:30:51,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:30:51,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:30:51,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:30:51,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:30:51,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:30:51,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:30:51,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:30:51,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:30:51,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:30:51,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:30:51,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:30:51,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:30:51,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:30:51,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:30:51,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:30:51,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:30:51,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:30:51,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:30:51,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:30:51,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:30:51,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:30:51,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:30:51,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:30:51,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:30:51,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:30:51,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:30:51,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:30:51,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:30:51,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:30:51,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:30:51,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:30:51,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:30:51,421 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:30:51,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:30:51,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:30:51,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:30:51,424 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:30:51,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:30:51,424 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:30:51,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:30:51,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:30:51,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:30:51,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:30:51,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:30:51,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:30:51,426 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:30:51,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:30:51,427 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:30:51,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:30:51,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:30:51,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:30:51,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:30:51,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:30:51,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:30:51,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:30:51,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:30:51,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:30:51,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:30:51,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:30:51,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:30:51,430 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 -> be1da8315ac927f943be98e64c3bee4508d9131b [2019-11-27 22:30:51,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:30:51,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:30:51,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:30:51,768 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:30:51,769 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:30:51,770 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms5f.c [2019-11-27 22:30:51,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a4f60fa/85e5159d320c4c0697a4d8526e1aa6e8/FLAG2ec95e6ae [2019-11-27 22:30:52,304 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:30:52,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms5f.c [2019-11-27 22:30:52,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a4f60fa/85e5159d320c4c0697a4d8526e1aa6e8/FLAG2ec95e6ae [2019-11-27 22:30:52,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a4f60fa/85e5159d320c4c0697a4d8526e1aa6e8 [2019-11-27 22:30:52,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:30:52,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:30:52,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:30:52,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:30:52,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:30:52,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:30:52" (1/1) ... [2019-11-27 22:30:52,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc4abe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:52, skipping insertion in model container [2019-11-27 22:30:52,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:30:52" (1/1) ... [2019-11-27 22:30:52,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:30:52,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:30:53,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:30:53,065 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:30:53,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:30:53,175 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:30:53,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53 WrapperNode [2019-11-27 22:30:53,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:30:53,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:30:53,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:30:53,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:30:53,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (1/1) ... [2019-11-27 22:30:53,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (1/1) ... [2019-11-27 22:30:53,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:30:53,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:30:53,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:30:53,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:30:53,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (1/1) ... [2019-11-27 22:30:53,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (1/1) ... [2019-11-27 22:30:53,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (1/1) ... [2019-11-27 22:30:53,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (1/1) ... [2019-11-27 22:30:53,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (1/1) ... [2019-11-27 22:30:53,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (1/1) ... [2019-11-27 22:30:53,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (1/1) ... [2019-11-27 22:30:53,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:30:53,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:30:53,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:30:53,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:30:53,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (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 22:30:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 22:30:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:30:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:30:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:30:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:30:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:30:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 22:30:53,562 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:30:53,562 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 22:30:53,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:30:53 BoogieIcfgContainer [2019-11-27 22:30:53,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:30:53,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:30:53,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:30:53,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:30:53,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:30:52" (1/3) ... [2019-11-27 22:30:53,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3339c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:30:53, skipping insertion in model container [2019-11-27 22:30:53,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:53" (2/3) ... [2019-11-27 22:30:53,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3339c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:30:53, skipping insertion in model container [2019-11-27 22:30:53,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:30:53" (3/3) ... [2019-11-27 22:30:53,573 INFO L109 eAbstractionObserver]: Analyzing ICFG ms5f.c [2019-11-27 22:30:53,583 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:30:53,590 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:30:53,605 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:30:53,653 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:30:53,654 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:30:53,654 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:30:53,654 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:30:53,654 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:30:53,654 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:30:53,655 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:30:53,655 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:30:53,677 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-27 22:30:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:30:53,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:53,692 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:53,692 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:53,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1476218026, now seen corresponding path program 1 times [2019-11-27 22:30:53,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:53,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102505285] [2019-11-27 22:30:53,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:30:53,853 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 22:30:53,854 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102505285] [2019-11-27 22:30:53,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:30:53,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:30:53,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008664699] [2019-11-27 22:30:53,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:30:53,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:30:53,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:30:53,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:30:53,875 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-27 22:30:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:30:53,890 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-27 22:30:53,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:30:53,892 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-27 22:30:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:30:53,900 INFO L225 Difference]: With dead ends: 29 [2019-11-27 22:30:53,900 INFO L226 Difference]: Without dead ends: 13 [2019-11-27 22:30:53,903 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 22:30:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-27 22:30:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-27 22:30:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-27 22:30:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-27 22:30:53,933 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-27 22:30:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:30:53,933 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-27 22:30:53,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:30:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-27 22:30:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:30:53,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:53,935 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:53,935 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:53,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:53,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1304115419, now seen corresponding path program 1 times [2019-11-27 22:30:53,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:53,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458510560] [2019-11-27 22:30:53,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:30:54,006 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 22:30:54,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458510560] [2019-11-27 22:30:54,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:30:54,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:30:54,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064566240] [2019-11-27 22:30:54,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:30:54,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:30:54,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:30:54,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:30:54,012 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-27 22:30:54,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:30:54,069 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-27 22:30:54,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:30:54,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-27 22:30:54,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:30:54,071 INFO L225 Difference]: With dead ends: 23 [2019-11-27 22:30:54,071 INFO L226 Difference]: Without dead ends: 15 [2019-11-27 22:30:54,072 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 22:30:54,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-27 22:30:54,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-27 22:30:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-27 22:30:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-27 22:30:54,076 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-27 22:30:54,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:30:54,077 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-27 22:30:54,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:30:54,078 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-27 22:30:54,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 22:30:54,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:54,079 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:54,079 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:54,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:54,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1358761923, now seen corresponding path program 1 times [2019-11-27 22:30:54,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:54,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56917459] [2019-11-27 22:30:54,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:30:54,177 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 22:30:54,177 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56917459] [2019-11-27 22:30:54,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:30:54,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 22:30:54,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630193183] [2019-11-27 22:30:54,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 22:30:54,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:30:54,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 22:30:54,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:30:54,179 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-27 22:30:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:30:54,250 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-11-27 22:30:54,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 22:30:54,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 22:30:54,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:30:54,251 INFO L225 Difference]: With dead ends: 25 [2019-11-27 22:30:54,252 INFO L226 Difference]: Without dead ends: 18 [2019-11-27 22:30:54,252 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 22:30:54,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-27 22:30:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-27 22:30:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-27 22:30:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-27 22:30:54,261 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2019-11-27 22:30:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:30:54,261 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-27 22:30:54,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 22:30:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-27 22:30:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 22:30:54,263 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:54,264 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:54,264 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:54,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1565637502, now seen corresponding path program 1 times [2019-11-27 22:30:54,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:54,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100696362] [2019-11-27 22:30:54,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:30:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:30:54,371 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:30:54,371 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:30:54,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:30:54 BoogieIcfgContainer [2019-11-27 22:30:54,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:30:54,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:30:54,409 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:30:54,409 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:30:54,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:30:53" (3/4) ... [2019-11-27 22:30:54,412 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:30:54,462 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:30:54,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:30:54,465 INFO L168 Benchmark]: Toolchain (without parser) took 1721.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -87.8 MB). Peak memory consumption was 43.3 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:54,465 INFO L168 Benchmark]: CDTParser took 0.59 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 22:30:54,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:54,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.79 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 22:30:54,468 INFO L168 Benchmark]: Boogie Preprocessor took 23.91 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:54,468 INFO L168 Benchmark]: RCFGBuilder took 318.09 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:54,469 INFO L168 Benchmark]: TraceAbstraction took 843.58 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: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:54,470 INFO L168 Benchmark]: Witness Printer took 53.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:54,474 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 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 432.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.79 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. * Boogie Preprocessor took 23.91 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 318.09 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 843.58 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: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. * Witness Printer took 53.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 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] i=0 VAL [N=1] [L26] COND TRUE i