./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/fo_test.i --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/fo_test.i -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 1b89be727e1b941b152f4b6e505aae7e5221fdd7 .......................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/fo_test.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 1b89be727e1b941b152f4b6e505aae7e5221fdd7 ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:57:08,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:57:08,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:57:08,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:57:08,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:57:08,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:57:08,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:57:08,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:57:08,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:57:08,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:57:08,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:57:08,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:57:08,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:57:08,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:57:08,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:57:08,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:57:08,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:57:08,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:57:08,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:57:08,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:57:08,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:57:08,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:57:08,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:57:08,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:57:08,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:08,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:08,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:08,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:08,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:08,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:08,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:08,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:08,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:08,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:08,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:08,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:08,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:08,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:08,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:08,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:08,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:08,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:57:08,268 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:08,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:08,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:08,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:08,276 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:08,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:08,276 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:08,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:57:08,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:08,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:08,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:08,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:08,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:08,278 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:08,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:08,280 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:08,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:08,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:08,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:08,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:08,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:08,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:08,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:08,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:08,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:08,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:57:08,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:57:08,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:08,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:08,286 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 -> 1b89be727e1b941b152f4b6e505aae7e5221fdd7 [2019-11-28 16:57:08,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:08,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:08,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:08,665 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:08,666 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:08,666 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/fo_test.i [2019-11-28 16:57:08,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e48b0e95/af8e5cfb684b4f79966095d56c574979/FLAGcbb069c32 [2019-11-28 16:57:09,266 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:09,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i [2019-11-28 16:57:09,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e48b0e95/af8e5cfb684b4f79966095d56c574979/FLAGcbb069c32 [2019-11-28 16:57:09,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e48b0e95/af8e5cfb684b4f79966095d56c574979 [2019-11-28 16:57:09,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:09,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:09,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:09,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:09,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:09,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:09" (1/1) ... [2019-11-28 16:57:09,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f81f53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:09, skipping insertion in model container [2019-11-28 16:57:09,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:09" (1/1) ... [2019-11-28 16:57:09,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:09,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:57:10,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:10,024 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:57:10,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:10,146 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:57:10,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10 WrapperNode [2019-11-28 16:57:10,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:10,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:10,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:57:10,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:57:10,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (1/1) ... [2019-11-28 16:57:10,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (1/1) ... [2019-11-28 16:57:10,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:10,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:57:10,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:57:10,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:57:10,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (1/1) ... [2019-11-28 16:57:10,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (1/1) ... [2019-11-28 16:57:10,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (1/1) ... [2019-11-28 16:57:10,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (1/1) ... [2019-11-28 16:57:10,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (1/1) ... [2019-11-28 16:57:10,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (1/1) ... [2019-11-28 16:57:10,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (1/1) ... [2019-11-28 16:57:10,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:57:10,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:57:10,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:57:10,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:57:10,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (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 16:57:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 16:57:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:57:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-28 16:57:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:57:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:57:10,551 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:57:10,552 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-28 16:57:10,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:10 BoogieIcfgContainer [2019-11-28 16:57:10,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:57:10,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:57:10,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:57:10,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:57:10,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:09" (1/3) ... [2019-11-28 16:57:10,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa49178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:10, skipping insertion in model container [2019-11-28 16:57:10,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:10" (2/3) ... [2019-11-28 16:57:10,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa49178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:10, skipping insertion in model container [2019-11-28 16:57:10,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:10" (3/3) ... [2019-11-28 16:57:10,577 INFO L109 eAbstractionObserver]: Analyzing ICFG fo_test.i [2019-11-28 16:57:10,600 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:57:10,608 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:57:10,639 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:57:10,669 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:57:10,669 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:57:10,670 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:57:10,670 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:57:10,672 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:57:10,672 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:57:10,672 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:57:10,673 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:57:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 16:57:10,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 16:57:10,694 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:10,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:10,696 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:10,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:10,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965446, now seen corresponding path program 1 times [2019-11-28 16:57:10,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:10,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674719434] [2019-11-28 16:57:10,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:10,877 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 16:57:10,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674719434] [2019-11-28 16:57:10,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:10,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 16:57:10,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828613426] [2019-11-28 16:57:10,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:57:10,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:57:10,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:57:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:57:10,905 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-11-28 16:57:10,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:10,957 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-11-28 16:57:10,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:57:10,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 16:57:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:10,978 INFO L225 Difference]: With dead ends: 23 [2019-11-28 16:57:10,978 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 16:57:10,984 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:57:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 16:57:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 16:57:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 16:57:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-28 16:57:11,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2019-11-28 16:57:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:11,038 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-28 16:57:11,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:57:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-28 16:57:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 16:57:11,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:11,042 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:11,042 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:11,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:11,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812488, now seen corresponding path program 1 times [2019-11-28 16:57:11,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:11,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147331403] [2019-11-28 16:57:11,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:11,176 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:57:11,177 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:57:11,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:57:11 BoogieIcfgContainer [2019-11-28 16:57:11,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:57:11,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:57:11,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:57:11,225 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:57:11,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:10" (3/4) ... [2019-11-28 16:57:11,230 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:57:11,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:57:11,234 INFO L168 Benchmark]: Toolchain (without parser) took 1673.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 963.1 MB in the beginning and 1.0 GB in the end (delta: -40.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:11,234 INFO L168 Benchmark]: CDTParser took 0.29 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 16:57:11,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -94.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:11,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.57 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: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:11,239 INFO L168 Benchmark]: Boogie Preprocessor took 26.96 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. [2019-11-28 16:57:11,240 INFO L168 Benchmark]: RCFGBuilder took 329.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:11,241 INFO L168 Benchmark]: TraceAbstraction took 661.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:11,242 INFO L168 Benchmark]: Witness Printer took 6.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:11,252 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 587.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -94.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.57 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: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.96 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 329.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 661.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 960]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of large string literal at line 1158. Possible FailurePath: [L1152] int globalState = 0; VAL [globalState=0] [L1170] int fd = open(file,flags); VAL [globalState=0] [L1171] COND FALSE !(fd>0) VAL [globalState=0] [L1172] return fd; VAL [globalState=0] [L1158] int file = l_open("unknown",00); [L1159] void* cbuf = (void*) malloc(sizeof(char)*100); [L1165] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L960] __VERIFIER_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 16:57:13,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:57:13,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:57:13,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:57:13,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:57:13,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:57:13,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:57:13,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:57:13,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:57:13,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:57:13,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:57:13,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:57:13,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:57:13,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:57:13,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:57:13,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:57:13,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:57:13,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:57:13,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:57:13,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:57:13,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:57:13,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:57:13,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:57:13,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:57:13,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:13,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:13,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:13,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:13,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:13,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:13,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:13,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:13,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:13,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:13,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:13,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:13,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:13,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:13,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:13,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:13,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:13,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:57:13,379 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:13,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:13,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:13,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:13,382 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:13,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:13,382 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:13,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:13,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:13,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:13,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:13,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:13,384 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:57:13,384 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:57:13,384 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:13,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:13,385 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:13,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:13,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:13,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:13,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:13,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:13,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:13,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:13,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:13,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:13,388 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:57:13,388 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:57:13,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:13,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:13,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:57:13,389 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 1b89be727e1b941b152f4b6e505aae7e5221fdd7 [2019-11-28 16:57:13,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:13,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:13,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:13,754 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:13,755 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:13,756 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/fo_test.i [2019-11-28 16:57:13,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31820403c/6c4c6c8f043048e6b00f2ba5bc27be6a/FLAG115d92b84 [2019-11-28 16:57:14,351 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:14,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i [2019-11-28 16:57:14,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31820403c/6c4c6c8f043048e6b00f2ba5bc27be6a/FLAG115d92b84 [2019-11-28 16:57:14,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31820403c/6c4c6c8f043048e6b00f2ba5bc27be6a [2019-11-28 16:57:14,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:14,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:14,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:14,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:14,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:14,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:14" (1/1) ... [2019-11-28 16:57:14,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad63d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:14, skipping insertion in model container [2019-11-28 16:57:14,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:14" (1/1) ... [2019-11-28 16:57:14,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:14,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:57:15,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:15,297 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:57:15,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:15,456 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:57:15,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15 WrapperNode [2019-11-28 16:57:15,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:15,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:15,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:57:15,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:57:15,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (1/1) ... [2019-11-28 16:57:15,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (1/1) ... [2019-11-28 16:57:15,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:15,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:57:15,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:57:15,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:57:15,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (1/1) ... [2019-11-28 16:57:15,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (1/1) ... [2019-11-28 16:57:15,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (1/1) ... [2019-11-28 16:57:15,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (1/1) ... [2019-11-28 16:57:15,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (1/1) ... [2019-11-28 16:57:15,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (1/1) ... [2019-11-28 16:57:15,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (1/1) ... [2019-11-28 16:57:15,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:57:15,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:57:15,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:57:15,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:57:15,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (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 16:57:15,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 16:57:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:57:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-28 16:57:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:57:15,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:57:15,861 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:57:15,862 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-28 16:57:15,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:15 BoogieIcfgContainer [2019-11-28 16:57:15,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:57:15,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:57:15,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:57:15,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:57:15,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:14" (1/3) ... [2019-11-28 16:57:15,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb21d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:15, skipping insertion in model container [2019-11-28 16:57:15,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:15" (2/3) ... [2019-11-28 16:57:15,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb21d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:15, skipping insertion in model container [2019-11-28 16:57:15,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:15" (3/3) ... [2019-11-28 16:57:15,873 INFO L109 eAbstractionObserver]: Analyzing ICFG fo_test.i [2019-11-28 16:57:15,887 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:57:15,894 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:57:15,915 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:57:15,946 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:57:15,947 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:57:15,947 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:57:15,947 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:57:15,947 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:57:15,948 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:57:15,948 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:57:15,948 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:57:15,964 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 16:57:15,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 16:57:15,970 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:15,972 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:15,972 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:15,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965446, now seen corresponding path program 1 times [2019-11-28 16:57:15,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:57:15,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938037405] [2019-11-28 16:57:15,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 16:57:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:16,115 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 16:57:16,120 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:57:16,153 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 16:57:16,153 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:57:16,158 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 16:57:16,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938037405] [2019-11-28 16:57:16,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:16,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-28 16:57:16,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497293455] [2019-11-28 16:57:16,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:57:16,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:57:16,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:57:16,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:57:16,180 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-11-28 16:57:16,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:16,223 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-11-28 16:57:16,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:57:16,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 16:57:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:16,233 INFO L225 Difference]: With dead ends: 23 [2019-11-28 16:57:16,234 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 16:57:16,238 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:57:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 16:57:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 16:57:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 16:57:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-28 16:57:16,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2019-11-28 16:57:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:16,266 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-28 16:57:16,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:57:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-28 16:57:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 16:57:16,267 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:16,267 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:16,472 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:57:16,472 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:16,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812488, now seen corresponding path program 1 times [2019-11-28 16:57:16,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:57:16,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562652274] [2019-11-28 16:57:16,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 16:57:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:16,601 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:57:16,601 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:57:16,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:57:16,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:57:16 BoogieIcfgContainer [2019-11-28 16:57:16,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:57:16,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:57:16,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:57:16,838 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:57:16,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:15" (3/4) ... [2019-11-28 16:57:16,843 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:57:16,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:57:16,846 INFO L168 Benchmark]: Toolchain (without parser) took 2160.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -85.0 MB). Peak memory consumption was 67.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:16,847 INFO L168 Benchmark]: CDTParser took 0.30 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 16:57:16,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -162.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:16,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:16,850 INFO L168 Benchmark]: Boogie Preprocessor took 35.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:16,852 INFO L168 Benchmark]: RCFGBuilder took 302.98 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:16,853 INFO L168 Benchmark]: TraceAbstraction took 972.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:16,854 INFO L168 Benchmark]: Witness Printer took 6.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:16,858 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 771.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -162.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 302.98 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 972.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 960]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of large string literal at line 1158. Possible FailurePath: [L1152] int globalState = 0; VAL [globalState=0] [L1170] int fd = open(file,flags); VAL [globalState=0] [L1171] COND FALSE !(fd>0) VAL [globalState=0] [L1172] return fd; VAL [globalState=0] [L1158] int file = l_open("unknown",00); [L1159] void* cbuf = (void*) malloc(sizeof(char)*100); [L1165] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L960] __VERIFIER_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 1 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 2 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...