./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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/config/TaipanReach.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_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan --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 Taipan --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 0.1.23-1dbac8b [2018-11-10 05:07:19,570 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:07:19,572 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:07:19,580 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:07:19,580 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:07:19,581 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:07:19,581 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:07:19,582 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:07:19,584 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:07:19,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:07:19,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:07:19,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:07:19,585 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:07:19,586 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:07:19,587 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:07:19,588 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:07:19,588 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:07:19,589 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:07:19,591 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:07:19,592 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:07:19,592 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:07:19,593 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:07:19,595 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:07:19,595 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:07:19,595 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:07:19,596 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:07:19,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:07:19,597 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:07:19,597 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:07:19,598 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:07:19,598 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:07:19,599 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:07:19,599 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:07:19,599 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:07:19,600 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:07:19,600 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:07:19,600 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 05:07:19,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:07:19,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:07:19,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:07:19,611 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 05:07:19,611 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 05:07:19,611 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 05:07:19,611 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 05:07:19,611 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 05:07:19,611 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 05:07:19,612 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 05:07:19,612 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 05:07:19,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:07:19,612 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:07:19,612 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:07:19,613 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:07:19,613 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:07:19,613 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:07:19,613 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:07:19,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:07:19,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:07:19,613 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:07:19,613 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:07:19,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:07:19,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:07:19,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:07:19,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:07:19,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:07:19,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:07:19,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:07:19,614 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:07:19,615 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 05:07:19,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:07:19,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:07:19,615 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 05:07:19,615 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan 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 -> Taipan 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 [2018-11-10 05:07:19,637 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:07:19,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:07:19,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:07:19,650 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:07:19,650 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:07:19,651 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/../../sv-benchmarks/c/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-10 05:07:19,691 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/data/004fc3352/aa38e49f3e5241c6be1dc7321364466d/FLAG9e5a61cbf [2018-11-10 05:07:19,986 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:07:19,987 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/sv-benchmarks/c/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-10 05:07:19,990 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/data/004fc3352/aa38e49f3e5241c6be1dc7321364466d/FLAG9e5a61cbf [2018-11-10 05:07:19,999 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/data/004fc3352/aa38e49f3e5241c6be1dc7321364466d [2018-11-10 05:07:20,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:07:20,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:07:20,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:07:20,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:07:20,004 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:07:20,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:07:19" (1/1) ... [2018-11-10 05:07:20,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7e98ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20, skipping insertion in model container [2018-11-10 05:07:20,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:07:19" (1/1) ... [2018-11-10 05:07:20,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:07:20,026 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:07:20,110 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:07:20,112 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:07:20,120 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:07:20,128 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:07:20,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20 WrapperNode [2018-11-10 05:07:20,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:07:20,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:07:20,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:07:20,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:07:20,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... [2018-11-10 05:07:20,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... [2018-11-10 05:07:20,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:07:20,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:07:20,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:07:20,145 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:07:20,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... [2018-11-10 05:07:20,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... [2018-11-10 05:07:20,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... [2018-11-10 05:07:20,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... [2018-11-10 05:07:20,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... [2018-11-10 05:07:20,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... [2018-11-10 05:07:20,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... [2018-11-10 05:07:20,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:07:20,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:07:20,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:07:20,161 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:07:20,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/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 [2018-11-10 05:07:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:07:20,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:07:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:07:20,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:07:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:07:20,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:07:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:07:20,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 05:07:20,330 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:07:20,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:07:20 BoogieIcfgContainer [2018-11-10 05:07:20,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:07:20,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:07:20,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:07:20,334 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:07:20,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:07:19" (1/3) ... [2018-11-10 05:07:20,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9f39bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:07:20, skipping insertion in model container [2018-11-10 05:07:20,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:07:20" (2/3) ... [2018-11-10 05:07:20,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9f39bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:07:20, skipping insertion in model container [2018-11-10 05:07:20,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:07:20" (3/3) ... [2018-11-10 05:07:20,337 INFO L112 eAbstractionObserver]: Analyzing ICFG mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-10 05:07:20,345 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:07:20,351 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:07:20,362 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:07:20,388 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:07:20,389 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:07:20,389 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:07:20,389 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:07:20,389 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:07:20,389 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:07:20,389 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:07:20,389 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:07:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-10 05:07:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 05:07:20,408 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:07:20,409 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:07:20,410 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:07:20,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:07:20,415 INFO L82 PathProgramCache]: Analyzing trace with hash 563245249, now seen corresponding path program 1 times [2018-11-10 05:07:20,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:07:20,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:07:20,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:07:20,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:07:20,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:07:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:07:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:07:20,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:07:20,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:07:20,491 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 05:07:20,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 05:07:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 05:07:20,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:07:20,503 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-10 05:07:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:07:20,515 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-11-10 05:07:20,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:07:20,516 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-10 05:07:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:07:20,521 INFO L225 Difference]: With dead ends: 32 [2018-11-10 05:07:20,521 INFO L226 Difference]: Without dead ends: 13 [2018-11-10 05:07:20,523 INFO L605 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 [2018-11-10 05:07:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-10 05:07:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-10 05:07:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-10 05:07:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-10 05:07:20,545 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-10 05:07:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:07:20,545 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-10 05:07:20,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 05:07:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-10 05:07:20,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 05:07:20,546 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:07:20,546 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:07:20,546 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:07:20,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:07:20,547 INFO L82 PathProgramCache]: Analyzing trace with hash -65738821, now seen corresponding path program 1 times [2018-11-10 05:07:20,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:07:20,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:07:20,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:07:20,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:07:20,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:07:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:07:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:07:20,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:07:20,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 05:07:20,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 05:07:20,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:07:20,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:07:20,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:07:20,655 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2018-11-10 05:07:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:07:20,681 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-10 05:07:20,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 05:07:20,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-10 05:07:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:07:20,682 INFO L225 Difference]: With dead ends: 21 [2018-11-10 05:07:20,682 INFO L226 Difference]: Without dead ends: 16 [2018-11-10 05:07:20,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:07:20,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-10 05:07:20,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-10 05:07:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 05:07:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-10 05:07:20,685 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-11-10 05:07:20,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:07:20,685 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-10 05:07:20,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:07:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-10 05:07:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 05:07:20,686 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:07:20,686 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:07:20,686 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:07:20,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:07:20,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1051591244, now seen corresponding path program 1 times [2018-11-10 05:07:20,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:07:20,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:07:20,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:07:20,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:07:20,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:07:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:07:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:07:20,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:07:20,756 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 05:07:20,756 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-10 05:07:20,757 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [10], [13], [15], [22], [25], [27], [33], [34], [35], [37] [2018-11-10 05:07:20,785 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 05:07:20,785 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 05:07:20,867 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-10 05:07:20,999 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 05:07:21,000 INFO L272 AbstractInterpreter]: Visited 12 different actions 68 times. Merged at 4 different actions 32 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-10 05:07:21,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:07:21,025 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 05:07:21,067 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-11-10 05:07:21,068 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 05:07:21,119 INFO L415 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2018-11-10 05:07:21,119 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 05:07:21,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:07:21,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-10 05:07:21,120 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 05:07:21,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 05:07:21,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 05:07:21,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:07:21,121 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2018-11-10 05:07:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:07:21,171 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-10 05:07:21,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:07:21,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-10 05:07:21,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:07:21,172 INFO L225 Difference]: With dead ends: 16 [2018-11-10 05:07:21,173 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 05:07:21,173 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:07:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 05:07:21,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 05:07:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 05:07:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 05:07:21,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-11-10 05:07:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:07:21,174 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:07:21,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 05:07:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 05:07:21,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 05:07:21,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 05:07:21,233 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 05:07:21,233 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:07:21,234 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:07:21,234 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 05:07:21,234 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 05:07:21,234 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 05:07:21,234 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2018-11-10 05:07:21,234 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2018-11-10 05:07:21,234 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-10 05:07:21,234 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2018-11-10 05:07:21,234 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-10 05:07:21,235 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-11-10 05:07:21,235 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (and (= (mod main_~x~0 4) 0) (<= 0 (* 2 main_~x~0))) [2018-11-10 05:07:21,235 INFO L421 ceAbstractionStarter]: At program point L11-5(lines 11 13) the Hoare annotation is: (and (= (mod main_~x~0 4) 0) (<= 0 (* 2 main_~x~0))) [2018-11-10 05:07:21,235 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 05:07:21,235 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 05:07:21,235 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 05:07:21,235 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 05:07:21,236 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 05:07:21,236 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 05:07:21,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:07:21 BoogieIcfgContainer [2018-11-10 05:07:21,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:07:21,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:07:21,245 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:07:21,246 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:07:21,246 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:07:20" (3/4) ... [2018-11-10 05:07:21,249 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 05:07:21,255 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 05:07:21,255 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 05:07:21,255 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 05:07:21,258 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-10 05:07:21,258 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 05:07:21,258 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 05:07:21,291 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f5e7b4f7-c1a4-43d6-98fb-e4b6005e706f/bin-2019/utaipan/witness.graphml [2018-11-10 05:07:21,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:07:21,292 INFO L168 Benchmark]: Toolchain (without parser) took 1290.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -103.7 MB). Peak memory consumption was 66.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:07:21,293 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:07:21,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.87 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:07:21,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.44 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:07:21,294 INFO L168 Benchmark]: Boogie Preprocessor took 16.17 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:07:21,295 INFO L168 Benchmark]: RCFGBuilder took 169.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -211.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 05:07:21,295 INFO L168 Benchmark]: TraceAbstraction took 913.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 91.1 MB). Peak memory consumption was 91.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:07:21,297 INFO L168 Benchmark]: Witness Printer took 45.90 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 05:07:21,299 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 126.87 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.44 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.17 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 169.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -211.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 913.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 91.1 MB). Peak memory consumption was 91.1 MB. Max. memory is 11.5 GB. * Witness Printer took 45.90 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: 3.4 MB). Peak memory consumption was 3.4 MB. 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 % 4 == 0 && 0 <= 2 * x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 3 SDslu, 51 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9285714285714286 AbsIntWeakeningRatio, 0.21428571428571427 AbsIntAvgWeakeningVarsNumRemoved, 0.5 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 27 HoareAnnotationTreeSize, 9 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...