./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/eqn4f.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/eqn4f.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 bda1393a6cae8c0593c13e5d45241d07ffdf29fb ........................................................................................................................................................................................................................................................................................... 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 22:29:18,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:29:18,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:29:18,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:29:18,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:29:18,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:29:18,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:29:18,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:29:18,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:29:18,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:29:18,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:29:18,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:29:18,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:29:18,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:29:18,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:29:18,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:29:18,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:29:18,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:29:18,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:29:18,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:29:18,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:29:18,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:29:18,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:29:18,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:29:18,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:29:18,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:29:18,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:29:18,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:29:18,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:29:18,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:29:18,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:29:18,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:29:18,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:29:18,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:29:18,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:29:18,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:29:18,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:29:18,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:29:18,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:29:18,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:29:18,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:29:18,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:29:18,337 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:29:18,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:29:18,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:29:18,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:29:18,340 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:29:18,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:29:18,341 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:29:18,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:29:18,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:29:18,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:29:18,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:29:18,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:29:18,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:29:18,344 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:29:18,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:29:18,344 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:29:18,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:29:18,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:29:18,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:29:18,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:29:18,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:29:18,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:29:18,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:29:18,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:29:18,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:29:18,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:29:18,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:29:18,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:29:18,348 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 -> bda1393a6cae8c0593c13e5d45241d07ffdf29fb [2019-11-27 22:29:18,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:29:18,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:29:18,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:29:18,679 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:29:18,679 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:29:18,680 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/eqn4f.c [2019-11-27 22:29:18,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dd316f3a/6b954bf9d1724e359c9f01310a96c809/FLAG4b6e39979 [2019-11-27 22:29:19,239 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:29:19,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn4f.c [2019-11-27 22:29:19,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dd316f3a/6b954bf9d1724e359c9f01310a96c809/FLAG4b6e39979 [2019-11-27 22:29:19,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dd316f3a/6b954bf9d1724e359c9f01310a96c809 [2019-11-27 22:29:19,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:29:19,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:29:19,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:29:19,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:29:19,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:29:19,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,599 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 10:29:19, skipping insertion in model container [2019-11-27 22:29:19,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:29:19,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:29:19,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:29:19,811 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:29:19,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:29:19,848 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:29:19,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19 WrapperNode [2019-11-27 22:29:19,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:29:19,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:29:19,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:29:19,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:29:19,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:29:19,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:29:19,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:29:19,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:29:19,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (1/1) ... [2019-11-27 22:29:19,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:29:19,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:29:19,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:29:19,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:29:19,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (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 22:29:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:29:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:29:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:29:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:29:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:29:20,274 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:29:20,274 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-27 22:29:20,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:29:20 BoogieIcfgContainer [2019-11-27 22:29:20,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:29:20,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:29:20,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:29:20,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:29:20,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:29:19" (1/3) ... [2019-11-27 22:29:20,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413aed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:29:20, skipping insertion in model container [2019-11-27 22:29:20,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:29:19" (2/3) ... [2019-11-27 22:29:20,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413aed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:29:20, skipping insertion in model container [2019-11-27 22:29:20,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:29:20" (3/3) ... [2019-11-27 22:29:20,286 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2019-11-27 22:29:20,297 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:29:20,305 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:29:20,324 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:29:20,373 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:29:20,373 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:29:20,374 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:29:20,374 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:29:20,374 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:29:20,375 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:29:20,375 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:29:20,375 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:29:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-27 22:29:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 22:29:20,401 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:29:20,402 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:29:20,403 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:29:20,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:29:20,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1486647931, now seen corresponding path program 1 times [2019-11-27 22:29:20,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:29:20,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935940025] [2019-11-27 22:29:20,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:29:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:29:20,572 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 22:29:20,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935940025] [2019-11-27 22:29:20,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:29:20,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:29:20,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521031608] [2019-11-27 22:29:20,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:29:20,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:29:20,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:29:20,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:29:20,595 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-27 22:29:20,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:29:20,610 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2019-11-27 22:29:20,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:29:20,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 22:29:20,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:29:20,622 INFO L225 Difference]: With dead ends: 33 [2019-11-27 22:29:20,622 INFO L226 Difference]: Without dead ends: 15 [2019-11-27 22:29:20,625 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 22:29:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-27 22:29:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-27 22:29:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-27 22:29:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-27 22:29:20,663 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-11-27 22:29:20,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:29:20,664 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-27 22:29:20,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:29:20,664 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-27 22:29:20,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 22:29:20,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:29:20,665 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:29:20,666 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:29:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:29:20,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1772723449, now seen corresponding path program 1 times [2019-11-27 22:29:20,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:29:20,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585174405] [2019-11-27 22:29:20,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:29:20,693 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 22:29:20,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485791951] [2019-11-27 22:29:20,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 22:29:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:29:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:29:20,808 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:29:20,808 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:29:21,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 22:29:21,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:29:21 BoogieIcfgContainer [2019-11-27 22:29:21,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:29:21,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:29:21,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:29:21,048 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:29:21,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:29:20" (3/4) ... [2019-11-27 22:29:21,051 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:29:21,098 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:29:21,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:29:21,102 INFO L168 Benchmark]: Toolchain (without parser) took 1510.18 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: -116.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-11-27 22:29:21,103 INFO L168 Benchmark]: CDTParser took 0.63 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 22:29:21,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.52 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-27 22:29:21,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:29:21,112 INFO L168 Benchmark]: Boogie Preprocessor took 31.01 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. [2019-11-27 22:29:21,113 INFO L168 Benchmark]: RCFGBuilder took 290.26 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-27 22:29:21,114 INFO L168 Benchmark]: TraceAbstraction took 770.07 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:29:21,115 INFO L168 Benchmark]: Witness Printer took 50.60 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. [2019-11-27 22:29:21,125 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 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 258.52 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 104.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.01 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. * RCFGBuilder took 290.26 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 770.07 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. * Witness Printer took 50.60 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] long long *a = malloc(sizeof(long long)*N); [L24] long long *b = malloc(sizeof(long long)*N); [L26] a[0] = 8 [L27] b[0] = 0 [L28] i=1 VAL [N=1] [L28] COND FALSE !(i