./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test26-2.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/ldv-regression/test26-2.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 e02278ee7d9986faf1ae0635ee11725f823e79f3 .................................................................................................................................................................................................................................... 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 23:53:25,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:53:25,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:53:25,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:53:25,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:53:25,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:53:25,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:53:25,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:53:25,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:53:25,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:53:25,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:53:25,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:53:25,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:53:25,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:53:25,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:53:25,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:53:25,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:53:25,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:53:25,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:53:25,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:53:25,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:53:25,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:53:25,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:53:25,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:53:25,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:53:25,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:53:25,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:53:25,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:53:25,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:53:25,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:53:25,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:53:25,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:53:25,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:53:25,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:53:25,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:53:25,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:53:25,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:53:25,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:53:25,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:53:25,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:53:25,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:53:25,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:53:25,388 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:53:25,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:53:25,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:53:25,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:53:25,392 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:53:25,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:53:25,393 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:53:25,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:53:25,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:53:25,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:53:25,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:53:25,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:53:25,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:53:25,394 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:53:25,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:53:25,395 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:53:25,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:53:25,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:53:25,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:53:25,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:53:25,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:53:25,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:25,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:53:25,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:53:25,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:53:25,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:53:25,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:53:25,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:53:25,398 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 -> e02278ee7d9986faf1ae0635ee11725f823e79f3 [2019-11-27 23:53:25,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:53:25,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:53:25,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:53:25,739 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:53:25,739 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:53:25,740 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test26-2.c [2019-11-27 23:53:25,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e914800c3/1a4fd382925c415d91ae89079e45ed48/FLAG7687d2a9b [2019-11-27 23:53:26,323 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:53:26,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test26-2.c [2019-11-27 23:53:26,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e914800c3/1a4fd382925c415d91ae89079e45ed48/FLAG7687d2a9b [2019-11-27 23:53:26,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e914800c3/1a4fd382925c415d91ae89079e45ed48 [2019-11-27 23:53:26,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:53:26,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:53:26,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:26,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:53:26,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:53:26,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:26,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d5e0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26, skipping insertion in model container [2019-11-27 23:53:26,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:26,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:53:26,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:26,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:26,896 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:26,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:26,930 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:26,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26 WrapperNode [2019-11-27 23:53:26,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:26,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:26,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:26,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:26,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:27,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:27,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:27,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:27,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:27,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:27,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:27,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:27,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:27,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:27,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:27,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:27,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (1/1) ... [2019-11-27 23:53:27,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:27,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:27,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:27,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:27,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (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 23:53:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:53:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:53:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-27 23:53:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:53:27,308 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:27,309 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:53:27,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:27 BoogieIcfgContainer [2019-11-27 23:53:27,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:27,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:27,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:27,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:27,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:53:26" (1/3) ... [2019-11-27 23:53:27,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca0a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:27, skipping insertion in model container [2019-11-27 23:53:27,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:26" (2/3) ... [2019-11-27 23:53:27,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca0a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:27, skipping insertion in model container [2019-11-27 23:53:27,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:27" (3/3) ... [2019-11-27 23:53:27,318 INFO L109 eAbstractionObserver]: Analyzing ICFG test26-2.c [2019-11-27 23:53:27,328 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:27,335 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:53:27,347 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:53:27,373 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:27,373 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:27,373 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:27,373 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:27,373 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:27,374 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:27,374 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:27,374 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-27 23:53:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 23:53:27,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:27,393 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 23:53:27,393 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:27,398 INFO L82 PathProgramCache]: Analyzing trace with hash 28692805, now seen corresponding path program 1 times [2019-11-27 23:53:27,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:27,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571239355] [2019-11-27 23:53:27,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:27,546 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:53:27,547 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:53:27,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:53:27 BoogieIcfgContainer [2019-11-27 23:53:27,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:53:27,578 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:53:27,578 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:53:27,578 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:53:27,579 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:27" (3/4) ... [2019-11-27 23:53:27,582 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:53:27,626 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:53:27,626 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:53:27,628 INFO L168 Benchmark]: Toolchain (without parser) took 964.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 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 3.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:27,629 INFO L168 Benchmark]: CDTParser took 0.21 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 23:53:27,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.09 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 23:53:27,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:27,632 INFO L168 Benchmark]: Boogie Preprocessor took 19.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:53:27,632 INFO L168 Benchmark]: RCFGBuilder took 267.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:27,633 INFO L168 Benchmark]: TraceAbstraction took 266.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:27,634 INFO L168 Benchmark]: Witness Printer took 47.84 ms. Allocated memory is still 1.1 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 23:53:27,639 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 267.09 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 90.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 267.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 266.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Witness Printer took 47.84 ms. Allocated memory is still 1.1 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L3-L5] struct dummy { int a, b; } global = {0, 1}; VAL [global={2:0}] [L14] struct dummy *pd = &global; [L9] EXPR \read(*pb) [L9] *pa = *pb [L18] EXPR pd->a [L18] EXPR global.b VAL [global={2:0}] [L18] COND TRUE pd->a != global.b [L24] __VERIFIER_error() VAL [global={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...