./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test28-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c 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/test28-1.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 4ab8dcad35597bc77a09246c20c802a7c0b3d86b ............................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-11-28 16:57:41,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:57:41,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:57:41,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:57:41,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:57:41,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:57:41,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:57:41,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:57:41,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:57:41,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:57:41,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:57:41,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:57:41,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:57:41,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:57:41,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:57:41,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:57:41,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:57:41,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:57:41,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:57:41,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:57:41,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:57:41,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:57:41,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:57:41,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:57:41,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:41,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:41,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:41,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:41,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:41,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:41,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:41,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:41,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:41,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:41,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:41,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:41,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:41,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:41,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:41,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:41,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:41,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:57:41,277 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:41,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:41,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:41,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:41,283 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:41,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:41,284 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:41,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:57:41,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:41,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:41,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:41,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:41,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:41,287 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:41,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:41,288 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:41,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:41,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:41,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:41,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:41,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:41,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:41,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:41,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:41,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:41,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:57:41,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:57:41,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:41,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:41,292 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 -> 4ab8dcad35597bc77a09246c20c802a7c0b3d86b [2019-11-28 16:57:41,595 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:41,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:41,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:41,621 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:41,622 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:41,623 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test28-1.c [2019-11-28 16:57:41,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb63f78f/330c61d0cd0848daaa87fe9b7b4ecc32/FLAG5270668b4 [2019-11-28 16:57:42,147 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:42,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test28-1.c [2019-11-28 16:57:42,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb63f78f/330c61d0cd0848daaa87fe9b7b4ecc32/FLAG5270668b4 [2019-11-28 16:57:42,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb63f78f/330c61d0cd0848daaa87fe9b7b4ecc32 [2019-11-28 16:57:42,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:42,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:42,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:42,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:42,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:42,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6176253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42, skipping insertion in model container [2019-11-28 16:57:42,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:42,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:57:42,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:42,782 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:57:42,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:42,810 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:57:42,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42 WrapperNode [2019-11-28 16:57:42,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:42,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:42,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:57:42,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:57:42,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:42,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:57:42,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:57:42,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:57:42,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (1/1) ... [2019-11-28 16:57:42,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:57:42,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:57:42,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:57:42,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:57:42,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (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 [2019-11-28 16:57:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:57:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:57:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:57:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:57:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:57:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:57:43,212 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:57:43,213 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 16:57:43,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:43 BoogieIcfgContainer [2019-11-28 16:57:43,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:57:43,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:57:43,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:57:43,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:57:43,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:42" (1/3) ... [2019-11-28 16:57:43,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db63280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:43, skipping insertion in model container [2019-11-28 16:57:43,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:42" (2/3) ... [2019-11-28 16:57:43,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db63280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:43, skipping insertion in model container [2019-11-28 16:57:43,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:43" (3/3) ... [2019-11-28 16:57:43,223 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-1.c [2019-11-28 16:57:43,230 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:57:43,235 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:57:43,247 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:57:43,266 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:57:43,266 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:57:43,266 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:57:43,267 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:57:43,267 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:57:43,267 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:57:43,267 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:57:43,267 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:57:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 16:57:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:57:43,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:43,284 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:43,284 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:43,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:43,289 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2019-11-28 16:57:43,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:43,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262896700] [2019-11-28 16:57:43,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:57:43,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262896700] [2019-11-28 16:57:43,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:43,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 16:57:43,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851629515] [2019-11-28 16:57:43,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 16:57:43,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:57:43,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 16:57:43,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:57:43,513 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 5 states. [2019-11-28 16:57:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:43,620 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-11-28 16:57:43,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 16:57:43,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-28 16:57:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:43,630 INFO L225 Difference]: With dead ends: 28 [2019-11-28 16:57:43,630 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 16:57:43,633 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 16:57:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 16:57:43,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2019-11-28 16:57:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 16:57:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-28 16:57:43,661 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2019-11-28 16:57:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:43,661 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-28 16:57:43,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 16:57:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-28 16:57:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:57:43,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:43,662 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:43,663 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:43,663 INFO L82 PathProgramCache]: Analyzing trace with hash -592221650, now seen corresponding path program 1 times [2019-11-28 16:57:43,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:43,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488646076] [2019-11-28 16:57:43,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:57:43,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488646076] [2019-11-28 16:57:43,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:43,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 16:57:43,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105737606] [2019-11-28 16:57:43,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 16:57:43,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:57:43,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 16:57:43,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 16:57:43,770 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2019-11-28 16:57:43,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:43,895 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-11-28 16:57:43,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 16:57:43,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-28 16:57:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:43,897 INFO L225 Difference]: With dead ends: 19 [2019-11-28 16:57:43,897 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 16:57:43,899 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:57:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 16:57:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 16:57:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 16:57:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-28 16:57:43,903 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2019-11-28 16:57:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:43,903 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-28 16:57:43,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 16:57:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-28 16:57:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:57:43,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:43,905 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:43,905 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:43,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1180938670, now seen corresponding path program 1 times [2019-11-28 16:57:43,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:43,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56237811] [2019-11-28 16:57:43,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:44,000 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:57:44,002 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:57:44,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:57:44 BoogieIcfgContainer [2019-11-28 16:57:44,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:57:44,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:57:44,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:57:44,037 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:57:44,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:43" (3/4) ... [2019-11-28 16:57:44,041 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:57:44,109 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:57:44,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:57:44,112 INFO L168 Benchmark]: Toolchain (without parser) took 1558.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -96.7 MB). Peak memory consumption was 43.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,112 INFO L168 Benchmark]: CDTParser took 0.77 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. [2019-11-28 16:57:44,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.92 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,115 INFO L168 Benchmark]: Boogie Preprocessor took 33.02 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. [2019-11-28 16:57:44,116 INFO L168 Benchmark]: RCFGBuilder took 276.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,117 INFO L168 Benchmark]: TraceAbstraction took 819.72 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: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,118 INFO L168 Benchmark]: Witness Printer took 73.17 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. [2019-11-28 16:57:44,123 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 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 256.92 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 93.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.02 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 276.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 819.72 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: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. * Witness Printer took 73.17 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: 26]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] struct dummy d1, d2; [L13] int n = __VERIFIER_nondet_int(); [L14] EXPR n ? &d1 : &d2 [L14] struct dummy *pd = n ? &d1 : &d2; [L15] COND TRUE pd == &d2 [L16] pd->a = 0 [L20] pd == &d2 && d2.b != 0 [L20] EXPR d2.b [L20] pd == &d2 && d2.b != 0 [L20] COND TRUE pd == &d2 && d2.b != 0 [L26] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 45 SDslu, 26 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...