./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/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 e4d315f8d1b77c8518b6dc9d0dc6c504346ef9f7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 02:07:54,209 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 02:07:54,210 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 02:07:54,216 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 02:07:54,217 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 02:07:54,217 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 02:07:54,218 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 02:07:54,218 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 02:07:54,219 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 02:07:54,220 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 02:07:54,220 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 02:07:54,220 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 02:07:54,221 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 02:07:54,221 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 02:07:54,222 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 02:07:54,222 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 02:07:54,223 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 02:07:54,224 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 02:07:54,225 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 02:07:54,226 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 02:07:54,226 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 02:07:54,227 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 02:07:54,228 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 02:07:54,228 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 02:07:54,229 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 02:07:54,229 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 02:07:54,230 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 02:07:54,230 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 02:07:54,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 02:07:54,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 02:07:54,231 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 02:07:54,232 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 02:07:54,232 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 02:07:54,232 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 02:07:54,233 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 02:07:54,233 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 02:07:54,233 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 02:07:54,240 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 02:07:54,240 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 02:07:54,241 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 02:07:54,241 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 02:07:54,241 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 02:07:54,241 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 02:07:54,241 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 02:07:54,241 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 02:07:54,242 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 02:07:54,242 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 02:07:54,242 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 02:07:54,242 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 02:07:54,242 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 02:07:54,242 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 02:07:54,242 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 02:07:54,242 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 02:07:54,243 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 02:07:54,243 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 02:07:54,244 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 02:07:54,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 02:07:54,244 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 02:07:54,244 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 02:07:54,244 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 02:07:54,244 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 02:07:54,244 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 02:07:54,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 02:07:54,244 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 02:07:54,244 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_a0765138-98cc-467f-ab71-a280303700f6/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 -> e4d315f8d1b77c8518b6dc9d0dc6c504346ef9f7 [2018-12-09 02:07:54,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 02:07:54,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 02:07:54,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 02:07:54,271 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 02:07:54,271 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 02:07:54,272 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+cfa-reducer.c [2018-12-09 02:07:54,305 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/data/d6b683bee/90dda831b17948b2814da05d75903006/FLAGd62aa8456 [2018-12-09 02:07:54,696 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 02:07:54,696 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+cfa-reducer.c [2018-12-09 02:07:54,699 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/data/d6b683bee/90dda831b17948b2814da05d75903006/FLAGd62aa8456 [2018-12-09 02:07:54,707 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/data/d6b683bee/90dda831b17948b2814da05d75903006 [2018-12-09 02:07:54,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 02:07:54,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 02:07:54,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 02:07:54,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 02:07:54,712 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 02:07:54,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c04efe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54, skipping insertion in model container [2018-12-09 02:07:54,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 02:07:54,727 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 02:07:54,808 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:07:54,811 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 02:07:54,820 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:07:54,828 INFO L195 MainTranslator]: Completed translation [2018-12-09 02:07:54,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54 WrapperNode [2018-12-09 02:07:54,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 02:07:54,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 02:07:54,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 02:07:54,829 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 02:07:54,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 02:07:54,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 02:07:54,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 02:07:54,841 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 02:07:54,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... [2018-12-09 02:07:54,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 02:07:54,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 02:07:54,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 02:07:54,851 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 02:07:54,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/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 [2018-12-09 02:07:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 02:07:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 02:07:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 02:07:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 02:07:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 02:07:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 02:07:54,990 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 02:07:54,991 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 02:07:54,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:07:54 BoogieIcfgContainer [2018-12-09 02:07:54,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 02:07:54,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 02:07:54,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 02:07:54,993 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 02:07:54,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:07:54" (1/3) ... [2018-12-09 02:07:54,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f45be8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:07:54, skipping insertion in model container [2018-12-09 02:07:54,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:54" (2/3) ... [2018-12-09 02:07:54,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f45be8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:07:54, skipping insertion in model container [2018-12-09 02:07:54,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:07:54" (3/3) ... [2018-12-09 02:07:54,996 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.p+cfa-reducer.c [2018-12-09 02:07:55,001 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 02:07:55,006 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 02:07:55,015 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 02:07:55,033 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 02:07:55,033 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 02:07:55,033 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 02:07:55,033 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 02:07:55,033 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 02:07:55,033 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 02:07:55,033 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 02:07:55,033 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 02:07:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-12-09 02:07:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 02:07:55,047 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:07:55,048 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 02:07:55,049 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:07:55,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:07:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-12-09 02:07:55,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 02:07:55,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:07:55,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:07:55,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:07:55,082 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 02:07:55,103 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 02:07:55,103 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 02:07:55,104 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 02:07:55,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:07:55,110 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 02:07:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:07:55,131 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 02:07:55,132 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 02:07:55,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 02:07:55,133 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 02:07:55,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:07:55,139 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 02:07:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:07:55,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:07:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 02:07:55,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 02:07:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 02:07:55,219 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:07:55,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-12-09 02:07:55,219 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 02:07:55,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 02:07:55,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 02:07:55,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 02:07:55,231 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-12-09 02:07:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:07:55,298 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-12-09 02:07:55,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 02:07:55,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-09 02:07:55,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:07:55,304 INFO L225 Difference]: With dead ends: 26 [2018-12-09 02:07:55,305 INFO L226 Difference]: Without dead ends: 13 [2018-12-09 02:07:55,306 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 02:07:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-09 02:07:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-09 02:07:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 02:07:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-09 02:07:55,326 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-09 02:07:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:07:55,326 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-09 02:07:55,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 02:07:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-09 02:07:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 02:07:55,326 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:07:55,327 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 02:07:55,327 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:07:55,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:07:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-12-09 02:07:55,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 02:07:55,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:07:55,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:07:55,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:07:55,328 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 02:07:55,333 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 02:07:55,333 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 02:07:55,333 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 02:07:55,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:07:55,340 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 02:07:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:07:55,360 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-12-09 02:07:55,361 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [17], [19], [22], [23], [27], [28], [29] [2018-12-09 02:07:55,381 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 02:07:55,381 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 02:07:55,486 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 02:07:55,487 INFO L272 AbstractInterpreter]: Visited 12 different actions 24 times. Merged at 4 different actions 12 times. Widened at 1 different actions 1 times. Performed 110 root evaluator evaluations with a maximum evaluation depth of 6. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-12-09 02:07:55,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:07:55,495 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 02:07:55,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 02:07:55,495 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 02:07:55,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:07:55,502 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 02:07:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:07:55,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:07:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 02:07:55,548 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 02:07:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 02:07:55,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 02:07:55,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-12-09 02:07:55,678 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 02:07:55,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 02:07:55,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 02:07:55,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-12-09 02:07:55,679 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-12-09 02:07:55,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:07:55,754 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-12-09 02:07:55,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 02:07:55,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2018-12-09 02:07:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:07:55,754 INFO L225 Difference]: With dead ends: 17 [2018-12-09 02:07:55,754 INFO L226 Difference]: Without dead ends: 14 [2018-12-09 02:07:55,755 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-12-09 02:07:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-09 02:07:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-09 02:07:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-09 02:07:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-09 02:07:55,757 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-09 02:07:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:07:55,757 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-09 02:07:55,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 02:07:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-09 02:07:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 02:07:55,757 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:07:55,757 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 02:07:55,758 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:07:55,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:07:55,758 INFO L82 PathProgramCache]: Analyzing trace with hash 486647847, now seen corresponding path program 2 times [2018-12-09 02:07:55,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 02:07:55,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:07:55,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:07:55,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:07:55,758 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 02:07:55,765 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 02:07:55,766 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 02:07:55,766 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 02:07:55,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 02:07:55,772 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 02:07:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:07:55,790 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 02:07:55,790 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 02:07:55,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 02:07:55,790 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 02:07:55,796 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 02:07:55,796 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 02:07:55,803 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-09 02:07:55,804 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 02:07:55,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:07:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 02:07:55,842 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 02:07:55,910 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) is different from true [2018-12-09 02:07:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-12-09 02:07:55,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 02:07:55,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-12-09 02:07:55,946 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 02:07:55,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 02:07:55,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 02:07:55,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2018-12-09 02:07:55,947 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-12-09 02:07:56,066 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-12-09 02:07:56,119 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-12-09 02:07:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:07:56,191 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2018-12-09 02:07:56,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 02:07:56,192 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-12-09 02:07:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:07:56,192 INFO L225 Difference]: With dead ends: 23 [2018-12-09 02:07:56,192 INFO L226 Difference]: Without dead ends: 18 [2018-12-09 02:07:56,193 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=116, Unknown=3, NotChecked=72, Total=240 [2018-12-09 02:07:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-09 02:07:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-09 02:07:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-09 02:07:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-09 02:07:56,199 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2018-12-09 02:07:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:07:56,199 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-09 02:07:56,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 02:07:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-09 02:07:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 02:07:56,200 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:07:56,200 INFO L402 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 02:07:56,200 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:07:56,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:07:56,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2089680281, now seen corresponding path program 3 times [2018-12-09 02:07:56,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 02:07:56,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:07:56,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 02:07:56,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:07:56,201 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 02:07:56,209 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 02:07:56,209 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 02:07:56,210 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 02:07:56,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 02:07:56,216 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 02:07:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:07:56,235 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 02:07:56,235 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 02:07:56,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 02:07:56,235 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 02:07:56,241 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 02:07:56,241 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 02:07:56,279 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 02:07:56,279 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 02:07:56,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:07:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 02:07:56,329 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 02:07:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 6 refuted. 6 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 02:07:58,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 02:07:58,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2018-12-09 02:07:58,499 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 02:07:58,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 02:07:58,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 02:07:58,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=140, Unknown=2, NotChecked=0, Total=182 [2018-12-09 02:07:58,500 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 14 states. [2018-12-09 02:08:00,716 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 21 [2018-12-09 02:08:00,782 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (= c_main_~__VERIFIER_assert__cond~0 1) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-12-09 02:08:00,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:08:00,783 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-12-09 02:08:00,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 02:08:00,783 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2018-12-09 02:08:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:08:00,783 INFO L225 Difference]: With dead ends: 20 [2018-12-09 02:08:00,784 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 02:08:00,784 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=99, Invalid=364, Unknown=3, NotChecked=40, Total=506 [2018-12-09 02:08:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 02:08:00,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 02:08:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 02:08:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 02:08:00,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-12-09 02:08:00,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:08:00,785 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 02:08:00,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 02:08:00,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 02:08:00,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 02:08:00,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 02:08:06,912 WARN L180 SmtUtils]: Spent 6.10 s on a formula simplification. DAG size of input: 58 DAG size of output: 22 [2018-12-09 02:08:06,914 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 02:08:06,915 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 02:08:06,915 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 02:08:06,915 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 02:08:06,915 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 02:08:06,915 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 02:08:06,915 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 02:08:06,915 INFO L444 ceAbstractionStarter]: At program point L33(lines 25 54) the Hoare annotation is: (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ main_~main__i~0 1))) (or (= (+ (* 2 main_~main__sum~0) (* 4 main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (<= 1 main_~main__n~0) (or (<= main_~main__i~0 main_~main__n~0) (= (* 2 main_~main__sum~0) (* (+ main_~main__n~0 1) main_~main__n~0)))) [2018-12-09 02:08:06,915 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 56) the Hoare annotation is: true [2018-12-09 02:08:06,915 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 56) no Hoare annotation was computed. [2018-12-09 02:08:06,916 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 54) no Hoare annotation was computed. [2018-12-09 02:08:06,916 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 55) no Hoare annotation was computed. [2018-12-09 02:08:06,916 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2018-12-09 02:08:06,916 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 56) no Hoare annotation was computed. [2018-12-09 02:08:06,916 INFO L448 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2018-12-09 02:08:06,916 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 51) no Hoare annotation was computed. [2018-12-09 02:08:06,919 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,919 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,920 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,920 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,924 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,924 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,924 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,924 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:08:06 BoogieIcfgContainer [2018-12-09 02:08:06,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 02:08:06,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 02:08:06,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 02:08:06,926 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 02:08:06,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:07:54" (3/4) ... [2018-12-09 02:08:06,928 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 02:08:06,931 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 02:08:06,931 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 02:08:06,934 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 02:08:06,934 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 02:08:06,959 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a0765138-98cc-467f-ab71-a280303700f6/bin-2019/utaipan/witness.graphml [2018-12-09 02:08:06,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 02:08:06,959 INFO L168 Benchmark]: Toolchain (without parser) took 12250.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 962.4 MB in the beginning and 831.7 MB in the end (delta: 130.7 MB). Peak memory consumption was 218.3 MB. Max. memory is 11.5 GB. [2018-12-09 02:08:06,960 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:08:06,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 118.17 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 02:08:06,960 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.16 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:08:06,960 INFO L168 Benchmark]: Boogie Preprocessor took 10.13 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:08:06,961 INFO L168 Benchmark]: RCFGBuilder took 140.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -114.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-09 02:08:06,961 INFO L168 Benchmark]: TraceAbstraction took 11933.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 831.7 MB in the end (delta: 234.3 MB). Peak memory consumption was 234.3 MB. Max. memory is 11.5 GB. [2018-12-09 02:08:06,961 INFO L168 Benchmark]: Witness Printer took 33.19 ms. Allocated memory is still 1.1 GB. Free memory is still 831.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:08:06,963 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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 118.17 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 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 12.16 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.13 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 140.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -114.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11933.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 831.7 MB in the end (delta: 234.3 MB). Peak memory consumption was 234.3 MB. Max. memory is 11.5 GB. * Witness Printer took 33.19 ms. Allocated memory is still 1.1 GB. Free memory is still 831.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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: 25]: Loop Invariant [2018-12-09 02:08:06,966 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,966 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,966 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,967 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,967 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,967 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,967 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 02:08:06,968 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: ((forall main_~main__n~0 : int :: (2 * main__sum + 4 * main__i + 2 == (main_~main__n~0 + 1) * main_~main__n~0 || main_~main__n~0 < main__i + 1) || main__i + 1 < main_~main__n~0) && 1 <= main__n) && (main__i <= main__n || 2 * main__sum == (main__n + 1) * main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. SAFE Result, 11.8s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 6.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 24 SDslu, 112 SDs, 0 SdLazy, 146 SolverSat, 11 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 47 HoareAnnotationTreeSize, 5 FomulaSimplifications, 70 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 211 FormulaSimplificationTreeSizeReductionInter, 6.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 98 ConstructedInterpolants, 8 QuantifiedInterpolants, 6203 SizeOfPredicates, 20 NumberOfNonLiveVariables, 205 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 9/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...