./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer --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 c6374d8695c81504f4ccfc7ac3dabef115b6d49d .......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:21:25,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:21:25,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:21:25,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:21:25,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:21:25,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:21:25,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:21:25,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:21:25,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:21:25,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:21:25,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:21:25,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:21:25,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:21:25,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:21:25,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:21:25,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:21:25,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:21:25,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:21:25,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:21:25,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:21:25,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:21:25,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:21:25,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:21:25,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:21:25,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:21:25,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:21:25,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:21:25,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:21:25,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:21:25,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:21:25,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:21:25,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:21:25,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:21:25,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:21:25,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:21:25,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:21:25,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:21:25,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:21:25,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:21:25,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:21:25,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:21:25,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 23:21:25,524 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:21:25,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:21:25,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:21:25,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:21:25,526 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:21:25,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:21:25,527 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:21:25,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:21:25,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:21:25,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:21:25,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:21:25,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:21:25,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:21:25,528 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:21:25,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:21:25,528 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:21:25,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:21:25,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:21:25,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:21:25,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:21:25,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:21:25,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:21:25,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:21:25,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:21:25,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:21:25,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:21:25,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:21:25,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:21:25,531 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer 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 -> c6374d8695c81504f4ccfc7ac3dabef115b6d49d [2019-11-19 23:21:25,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:21:25,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:21:25,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:21:25,701 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:21:25,701 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:21:25,702 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2019-11-19 23:21:25,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/data/3f82d9ac1/c5b7e613fe8e4d00af6e824df6ff22d7/FLAG0afa393b2 [2019-11-19 23:21:26,144 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:21:26,144 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2019-11-19 23:21:26,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/data/3f82d9ac1/c5b7e613fe8e4d00af6e824df6ff22d7/FLAG0afa393b2 [2019-11-19 23:21:26,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/data/3f82d9ac1/c5b7e613fe8e4d00af6e824df6ff22d7 [2019-11-19 23:21:26,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:21:26,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:21:26,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:21:26,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:21:26,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:21:26,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ee0266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26, skipping insertion in model container [2019-11-19 23:21:26,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,587 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:21:26,601 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:21:26,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:21:26,784 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:21:26,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:21:26,908 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:21:26,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26 WrapperNode [2019-11-19 23:21:26,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:21:26,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:21:26,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:21:26,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:21:26,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:21:26,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:21:26,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:21:26,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:21:26,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... [2019-11-19 23:21:26,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:21:26,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:21:26,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:21:26,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:21:26,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/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 [2019-11-19 23:21:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-19 23:21:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-19 23:21:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:21:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:21:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2019-11-19 23:21:27,020 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2019-11-19 23:21:27,184 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:21:27,185 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 23:21:27,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:21:27 BoogieIcfgContainer [2019-11-19 23:21:27,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:21:27,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:21:27,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:21:27,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:21:27,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:21:26" (1/3) ... [2019-11-19 23:21:27,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39606e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:21:27, skipping insertion in model container [2019-11-19 23:21:27,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:21:26" (2/3) ... [2019-11-19 23:21:27,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39606e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:21:27, skipping insertion in model container [2019-11-19 23:21:27,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:21:27" (3/3) ... [2019-11-19 23:21:27,194 INFO L109 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-2.c [2019-11-19 23:21:27,203 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:21:27,209 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-19 23:21:27,218 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-19 23:21:27,238 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:21:27,238 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 23:21:27,238 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:21:27,238 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:21:27,238 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:21:27,239 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:21:27,239 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:21:27,239 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:21:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-19 23:21:27,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 23:21:27,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:21:27,261 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:21:27,262 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:21:27,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:21:27,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1282022558, now seen corresponding path program 1 times [2019-11-19 23:21:27,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:21:27,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781373309] [2019-11-19 23:21:27,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:21:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:21:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:21:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:21:27,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781373309] [2019-11-19 23:21:27,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:21:27,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:21:27,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390184287] [2019-11-19 23:21:27,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:21:27,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:21:27,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:21:27,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:21:27,454 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-11-19 23:21:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:21:27,536 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-11-19 23:21:27,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:21:27,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-19 23:21:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:21:27,544 INFO L225 Difference]: With dead ends: 26 [2019-11-19 23:21:27,544 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 23:21:27,547 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:21:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 23:21:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 23:21:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 23:21:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 23:21:27,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-19 23:21:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:21:27,571 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:21:27,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:21:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:21:27,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 23:21:27,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 23:21:27,595 INFO L444 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-11-19 23:21:27,596 INFO L440 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: (not (<= |f_#in~n| 2)) [2019-11-19 23:21:27,596 INFO L444 ceAbstractionStarter]: For program point L9-1(lines 6 11) no Hoare annotation was computed. [2019-11-19 23:21:27,596 INFO L444 ceAbstractionStarter]: For program point fEXIT(lines 6 11) no Hoare annotation was computed. [2019-11-19 23:21:27,596 INFO L444 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-11-19 23:21:27,596 INFO L447 ceAbstractionStarter]: At program point fENTRY(lines 6 11) the Hoare annotation is: true [2019-11-19 23:21:27,596 INFO L444 ceAbstractionStarter]: For program point fFINAL(lines 6 11) no Hoare annotation was computed. [2019-11-19 23:21:27,597 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 23:21:27,597 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 23:21:27,597 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 23:21:27,597 INFO L447 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: true [2019-11-19 23:21:27,597 INFO L444 ceAbstractionStarter]: For program point L21-1(lines 20 22) no Hoare annotation was computed. [2019-11-19 23:21:27,597 INFO L447 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2019-11-19 23:21:27,598 INFO L444 ceAbstractionStarter]: For program point f2EXIT(lines 13 18) no Hoare annotation was computed. [2019-11-19 23:21:27,598 INFO L444 ceAbstractionStarter]: For program point L16-1(lines 13 18) no Hoare annotation was computed. [2019-11-19 23:21:27,598 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-19 23:21:27,598 INFO L447 ceAbstractionStarter]: At program point f2ENTRY(lines 13 18) the Hoare annotation is: true [2019-11-19 23:21:27,598 INFO L444 ceAbstractionStarter]: For program point f2FINAL(lines 13 18) no Hoare annotation was computed. [2019-11-19 23:21:27,598 INFO L444 ceAbstractionStarter]: For program point f2Err0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2019-11-19 23:21:27,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:21:27 BoogieIcfgContainer [2019-11-19 23:21:27,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 23:21:27,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:21:27,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:21:27,603 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:21:27,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:21:27" (3/4) ... [2019-11-19 23:21:27,606 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 23:21:27,613 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2019-11-19 23:21:27,613 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2019-11-19 23:21:27,617 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-19 23:21:27,617 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-19 23:21:27,654 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c6a3ba49-0907-4443-9ea7-4b11e50f894a/bin/uautomizer/witness.graphml [2019-11-19 23:21:27,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:21:27,656 INFO L168 Benchmark]: Toolchain (without parser) took 1083.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:21:27,657 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:21:27,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-19 23:21:27,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.05 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. [2019-11-19 23:21:27,658 INFO L168 Benchmark]: Boogie Preprocessor took 17.64 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. [2019-11-19 23:21:27,659 INFO L168 Benchmark]: RCFGBuilder took 225.49 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-19 23:21:27,659 INFO L168 Benchmark]: TraceAbstraction took 415.17 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:21:27,660 INFO L168 Benchmark]: Witness Printer took 51.97 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. [2019-11-19 23:21:27,662 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 336.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.05 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 17.64 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 225.49 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 415.17 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 51.97 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 2 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 8 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 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 proved your program to be correct! Received shutdown request...