./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/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 475c628c7fa35464b80d0910fb562858270fdb34 ............................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:50:43,855 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:50:43,856 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:50:43,862 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:50:43,863 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:50:43,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:50:43,864 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:50:43,865 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:50:43,866 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:50:43,867 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:50:43,868 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:50:43,868 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:50:43,869 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:50:43,869 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:50:43,870 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:50:43,870 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:50:43,871 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:50:43,872 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:50:43,873 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:50:43,874 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:50:43,875 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:50:43,876 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:50:43,877 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:50:43,877 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:50:43,878 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:50:43,878 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:50:43,878 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:50:43,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:50:43,880 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:50:43,880 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:50:43,881 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:50:43,881 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:50:43,881 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:50:43,881 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:50:43,882 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:50:43,882 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:50:43,882 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 10:50:43,889 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:50:43,889 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:50:43,890 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:50:43,890 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 10:50:43,891 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:50:43,891 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:50:43,891 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:50:43,892 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:50:43,892 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:50:43,892 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:50:43,892 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:50:43,892 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:50:43,892 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:50:43,893 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:50:43,893 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:50:43,893 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:50:43,893 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:50:43,893 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:50:43,893 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:50:43,893 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:50:43,893 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:50:43,894 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:50:43,894 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:50:43,894 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:50:43,894 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:50:43,894 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:50:43,894 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:50:43,894 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:50:43,895 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:50:43,895 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:50:43,895 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/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 -> 475c628c7fa35464b80d0910fb562858270fdb34 [2018-11-18 10:50:43,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:50:43,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:50:43,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:50:43,929 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:50:43,929 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:50:43,930 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-18 10:50:43,966 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/data/9e1cafb56/e32ea28bd3534284a530390760507c31/FLAG715c1e282 [2018-11-18 10:50:44,368 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:50:44,368 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/sv-benchmarks/c/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-18 10:50:44,372 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/data/9e1cafb56/e32ea28bd3534284a530390760507c31/FLAG715c1e282 [2018-11-18 10:50:44,385 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/data/9e1cafb56/e32ea28bd3534284a530390760507c31 [2018-11-18 10:50:44,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:50:44,389 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:50:44,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:50:44,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:50:44,394 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:50:44,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:50:44" (1/1) ... [2018-11-18 10:50:44,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170afedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44, skipping insertion in model container [2018-11-18 10:50:44,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:50:44" (1/1) ... [2018-11-18 10:50:44,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:50:44,419 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:50:44,525 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:50:44,527 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:50:44,535 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:50:44,543 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:50:44,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44 WrapperNode [2018-11-18 10:50:44,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:50:44,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:50:44,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:50:44,544 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:50:44,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44" (1/1) ... [2018-11-18 10:50:44,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44" (1/1) ... [2018-11-18 10:50:44,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44" (1/1) ... [2018-11-18 10:50:44,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44" (1/1) ... [2018-11-18 10:50:44,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44" (1/1) ... [2018-11-18 10:50:44,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44" (1/1) ... [2018-11-18 10:50:44,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44" (1/1) ... [2018-11-18 10:50:44,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:50:44,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:50:44,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:50:44,560 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:50:44,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/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 [2018-11-18 10:50:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:50:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:50:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 10:50:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:50:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:50:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:50:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 10:50:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:50:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:50:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:50:44,719 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:50:44,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:50:44 BoogieIcfgContainer [2018-11-18 10:50:44,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:50:44,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:50:44,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:50:44,723 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:50:44,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:50:44" (1/3) ... [2018-11-18 10:50:44,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6a739e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:50:44, skipping insertion in model container [2018-11-18 10:50:44,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:44" (2/3) ... [2018-11-18 10:50:44,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6a739e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:50:44, skipping insertion in model container [2018-11-18 10:50:44,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:50:44" (3/3) ... [2018-11-18 10:50:44,725 INFO L112 eAbstractionObserver]: Analyzing ICFG mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-18 10:50:44,733 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:50:44,737 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:50:44,746 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:50:44,767 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:50:44,767 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:50:44,768 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:50:44,768 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:50:44,768 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:50:44,768 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:50:44,768 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:50:44,768 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:50:44,768 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:50:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-18 10:50:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 10:50:44,782 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:50:44,782 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:50:44,784 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:50:44,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:50:44,788 INFO L82 PathProgramCache]: Analyzing trace with hash 563245249, now seen corresponding path program 1 times [2018-11-18 10:50:44,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:50:44,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:50:44,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:50:44,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:50:44,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:50:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:50:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:50:44,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:50:44,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:50:44,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 10:50:44,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:50:44,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:50:44,873 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-18 10:50:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:50:44,889 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-11-18 10:50:44,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:50:44,890 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 10:50:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:50:44,897 INFO L225 Difference]: With dead ends: 32 [2018-11-18 10:50:44,897 INFO L226 Difference]: Without dead ends: 13 [2018-11-18 10:50:44,899 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:50:44,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-18 10:50:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 10:50:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 10:50:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-18 10:50:44,922 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-18 10:50:44,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:50:44,922 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-18 10:50:44,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 10:50:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-18 10:50:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 10:50:44,922 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:50:44,923 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:50:44,923 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:50:44,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:50:44,923 INFO L82 PathProgramCache]: Analyzing trace with hash -65738821, now seen corresponding path program 1 times [2018-11-18 10:50:44,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:50:44,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:50:44,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:50:44,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:50:44,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:50:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:50:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:50:45,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:50:45,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 10:50:45,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 10:50:45,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 10:50:45,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 10:50:45,112 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2018-11-18 10:50:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:50:45,149 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-11-18 10:50:45,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 10:50:45,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-18 10:50:45,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:50:45,149 INFO L225 Difference]: With dead ends: 13 [2018-11-18 10:50:45,149 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 10:50:45,150 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 10:50:45,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 10:50:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 10:50:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 10:50:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 10:50:45,150 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-11-18 10:50:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:50:45,151 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:50:45,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 10:50:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:50:45,151 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 10:50:45,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 10:50:45,175 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 10:50:45,175 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:50:45,175 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:50:45,175 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 10:50:45,175 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:50:45,175 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:50:45,175 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2018-11-18 10:50:45,175 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2018-11-18 10:50:45,175 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-18 10:50:45,175 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2018-11-18 10:50:45,175 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-18 10:50:45,175 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-11-18 10:50:45,176 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (and (<= main_~x~0 (let ((.cse0 (div main_~x~0 4))) (+ (* 4294967296 (div (+ main_~x~0 (* (- 4) .cse0)) 4294967296)) (* 4 .cse0)))) (<= 0 main_~x~0)) [2018-11-18 10:50:45,176 INFO L421 ceAbstractionStarter]: At program point L11-5(lines 11 13) the Hoare annotation is: (and (<= main_~x~0 (let ((.cse0 (div main_~x~0 4))) (+ (* 4294967296 (div (+ main_~x~0 (* (- 4) .cse0)) 4294967296)) (* 4 .cse0)))) (<= 0 main_~x~0)) [2018-11-18 10:50:45,176 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 10:50:45,176 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 10:50:45,176 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 10:50:45,176 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 10:50:45,177 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 10:50:45,177 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 10:50:45,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:50:45 BoogieIcfgContainer [2018-11-18 10:50:45,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:50:45,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:50:45,187 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:50:45,187 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:50:45,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:50:44" (3/4) ... [2018-11-18 10:50:45,190 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 10:50:45,194 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 10:50:45,195 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 10:50:45,195 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 10:50:45,197 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 10:50:45,197 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 10:50:45,198 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 10:50:45,222 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e146b7a4-2f34-420a-9f24-4f82ec9dd4d6/bin-2019/uautomizer/witness.graphml [2018-11-18 10:50:45,222 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:50:45,223 INFO L168 Benchmark]: Toolchain (without parser) took 834.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 961.9 MB in the beginning and 1.1 GB in the end (delta: -112.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-11-18 10:50:45,224 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:50:45,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.12 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:50:45,225 INFO L168 Benchmark]: Boogie Preprocessor took 16.63 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:50:45,225 INFO L168 Benchmark]: RCFGBuilder took 159.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-18 10:50:45,226 INFO L168 Benchmark]: TraceAbstraction took 466.21 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: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. [2018-11-18 10:50:45,226 INFO L168 Benchmark]: Witness Printer took 35.58 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. [2018-11-18 10:50:45,228 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.12 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.63 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 159.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 466.21 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: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. * Witness Printer took 35.58 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: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x <= 4294967296 * ((x + -4 * (x / 4)) / 4294967296) + 4 * (x / 4) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 1 SDslu, 22 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 51 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1214 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...