./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 f387422440710097410250bc8628a78b0d15eed2 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:48:55,912 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:48:55,913 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:48:55,919 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:48:55,919 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:48:55,920 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:48:55,921 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:48:55,922 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:48:55,923 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:48:55,924 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:48:55,925 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:48:55,925 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:48:55,925 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:48:55,926 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:48:55,927 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:48:55,928 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:48:55,928 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:48:55,929 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:48:55,931 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:48:55,932 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:48:55,933 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:48:55,934 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:48:55,935 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:48:55,935 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:48:55,936 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:48:55,936 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:48:55,937 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:48:55,938 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:48:55,938 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:48:55,939 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:48:55,939 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:48:55,940 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:48:55,940 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:48:55,940 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:48:55,941 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:48:55,941 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:48:55,941 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:48:55,949 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:48:55,949 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:48:55,950 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:48:55,950 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:48:55,950 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:48:55,950 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:48:55,950 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:48:55,950 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:48:55,951 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:48:55,951 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:48:55,951 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:48:55,951 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:48:55,951 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:48:55,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:48:55,952 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:48:55,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:48:55,952 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:48:55,952 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:48:55,953 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:48:55,953 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:48:55,953 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:48:55,953 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:48:55,953 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:48:55,953 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:48:55,953 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:48:55,954 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:48:55,954 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:48:55,954 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:48:55,954 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:48:55,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:48:55,954 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:48:55,954 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:48:55,955 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:48:55,955 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:48:55,955 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:48:55,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:48:55,955 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:48:55,955 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_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 -> f387422440710097410250bc8628a78b0d15eed2 [2018-11-18 12:48:55,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:48:55,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:48:55,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:48:55,993 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:48:55,994 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:48:55,994 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-11-18 12:48:56,041 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/data/98638f659/83bead9919fd4c2cbc2c92e1b4060bf7/FLAG8fe098ae4 [2018-11-18 12:48:56,373 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:48:56,374 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-11-18 12:48:56,379 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/data/98638f659/83bead9919fd4c2cbc2c92e1b4060bf7/FLAG8fe098ae4 [2018-11-18 12:48:56,798 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/data/98638f659/83bead9919fd4c2cbc2c92e1b4060bf7 [2018-11-18 12:48:56,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:48:56,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:48:56,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:48:56,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:48:56,804 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:48:56,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf05c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56, skipping insertion in model container [2018-11-18 12:48:56,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:48:56,830 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:48:56,936 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:48:56,939 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:48:56,949 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:48:56,957 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:48:56,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56 WrapperNode [2018-11-18 12:48:56,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:48:56,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:48:56,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:48:56,958 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:48:56,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:48:56,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:48:56,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:48:56,971 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:48:56,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... [2018-11-18 12:48:56,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:48:56,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:48:56,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:48:56,983 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:48:56,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 [2018-11-18 12:48:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:48:57,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:48:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:48:57,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:48:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:48:57,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:48:57,151 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:48:57,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:48:57 BoogieIcfgContainer [2018-11-18 12:48:57,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:48:57,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:48:57,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:48:57,154 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:48:57,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:48:56" (1/3) ... [2018-11-18 12:48:57,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487a0a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:48:57, skipping insertion in model container [2018-11-18 12:48:57,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:56" (2/3) ... [2018-11-18 12:48:57,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487a0a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:48:57, skipping insertion in model container [2018-11-18 12:48:57,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:48:57" (3/3) ... [2018-11-18 12:48:57,156 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-11-18 12:48:57,162 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:48:57,167 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:48:57,176 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:48:57,196 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:48:57,196 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:48:57,197 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:48:57,197 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:48:57,197 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:48:57,197 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:48:57,197 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:48:57,197 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:48:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-18 12:48:57,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 12:48:57,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:57,218 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:48:57,220 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:57,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:57,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-11-18 12:48:57,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:48:57,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:57,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:57,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:57,269 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:48:57,292 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 12:48:57,293 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 12:48:57,293 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 [2018-11-18 12:48:57,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:57,303 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 12:48:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:57,326 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-18 12:48:57,328 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 12:48:57,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:48:57,328 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 [2018-11-18 12:48:57,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:57,334 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 12:48:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:57,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:48:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:57,388 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:48:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:57,423 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:48:57,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-11-18 12:48:57,424 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:48:57,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:48:57,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:48:57,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:48:57,438 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-11-18 12:48:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:57,509 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-11-18 12:48:57,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:48:57,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-18 12:48:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:57,516 INFO L225 Difference]: With dead ends: 26 [2018-11-18 12:48:57,516 INFO L226 Difference]: Without dead ends: 13 [2018-11-18 12:48:57,519 INFO L604 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 [2018-11-18 12:48:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-18 12:48:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 12:48:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 12:48:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-18 12:48:57,541 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-18 12:48:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:57,542 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-18 12:48:57,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:48:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-18 12:48:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 12:48:57,542 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:57,542 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:48:57,543 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:57,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:57,543 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-11-18 12:48:57,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:48:57,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:57,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:57,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:57,544 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:48:57,551 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 12:48:57,551 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 12:48:57,551 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 [2018-11-18 12:48:57,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:57,565 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 12:48:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:57,591 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-11-18 12:48:57,592 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [17], [19], [22], [23], [27], [28], [29] [2018-11-18 12:48:57,613 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 12:48:57,613 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 12:48:57,735 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 12:48:57,736 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. [2018-11-18 12:48:57,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:57,746 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 12:48:57,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:48:57,746 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 [2018-11-18 12:48:57,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:57,752 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 12:48:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:57,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:48:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:57,842 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:48:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:58,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:48:58,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-18 12:48:58,005 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 12:48:58,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 12:48:58,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 12:48:58,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-18 12:48:58,006 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-11-18 12:48:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:58,072 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-18 12:48:58,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 12:48:58,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2018-11-18 12:48:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:58,072 INFO L225 Difference]: With dead ends: 17 [2018-11-18 12:48:58,072 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 12:48:58,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:48:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 12:48:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 12:48:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 12:48:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 12:48:58,076 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-18 12:48:58,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:58,076 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 12:48:58,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 12:48:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 12:48:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 12:48:58,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:58,077 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:48:58,077 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:58,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:58,077 INFO L82 PathProgramCache]: Analyzing trace with hash 486647847, now seen corresponding path program 2 times [2018-11-18 12:48:58,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:48:58,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:58,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:58,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:58,078 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:48:58,088 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 12:48:58,088 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 12:48:58,088 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 [2018-11-18 12:48:58,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:48:58,094 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 12:48:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:58,113 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 12:48:58,113 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 12:48:58,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:48:58,114 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 [2018-11-18 12:48:58,119 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:48:58,119 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 12:48:58,128 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-18 12:48:58,128 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:48:58,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:48:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:58,168 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:48:58,242 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 [2018-11-18 12:48:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-11-18 12:48:58,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:48:58,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-18 12:48:58,288 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 12:48:58,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 12:48:58,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 12:48:58,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2018-11-18 12:48:58,289 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-11-18 12:48:58,458 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 [2018-11-18 12:48:58,519 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 [2018-11-18 12:48:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:58,604 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2018-11-18 12:48:58,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 12:48:58,604 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-11-18 12:48:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:58,605 INFO L225 Difference]: With dead ends: 23 [2018-11-18 12:48:58,605 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 12:48:58,605 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=116, Unknown=3, NotChecked=72, Total=240 [2018-11-18 12:48:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 12:48:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 12:48:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 12:48:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 12:48:58,610 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2018-11-18 12:48:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:58,610 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 12:48:58,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 12:48:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 12:48:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 12:48:58,611 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:58,611 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:48:58,611 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:58,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:58,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2089680281, now seen corresponding path program 3 times [2018-11-18 12:48:58,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:48:58,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:58,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:48:58,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:58,613 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:48:58,621 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 12:48:58,621 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 12:48:58,621 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 [2018-11-18 12:48:58,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:48:58,635 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 12:48:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:58,665 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 12:48:58,665 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 12:48:58,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:48:58,665 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/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 [2018-11-18 12:48:58,671 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 12:48:58,671 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 12:48:58,708 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 12:48:58,709 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:48:58,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:48:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:58,765 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:48:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 6 refuted. 6 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 12:48:58,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:48:58,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2018-11-18 12:48:58,931 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 12:48:58,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 12:48:58,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 12:48:58,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=140, Unknown=2, NotChecked=0, Total=182 [2018-11-18 12:48:58,932 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 14 states. [2018-11-18 12:48:59,117 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)))) (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 [2018-11-18 12:48:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:59,170 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-11-18 12:48:59,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 12:48:59,170 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2018-11-18 12:48:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:59,171 INFO L225 Difference]: With dead ends: 20 [2018-11-18 12:48:59,171 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:48:59,171 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=334, Unknown=3, NotChecked=38, Total=462 [2018-11-18 12:48:59,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:48:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:48:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:48:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:48:59,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-18 12:48:59,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:59,172 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:48:59,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 12:48:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:48:59,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:48:59,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:49:05,310 WARN L180 SmtUtils]: Spent 6.11 s on a formula simplification. DAG size of input: 58 DAG size of output: 22 [2018-11-18 12:49:05,313 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:49:05,313 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:49:05,313 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:49:05,313 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:49:05,313 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:49:05,313 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:49:05,313 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:49:05,313 INFO L421 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)))) [2018-11-18 12:49:05,314 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 56) the Hoare annotation is: true [2018-11-18 12:49:05,314 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 56) no Hoare annotation was computed. [2018-11-18 12:49:05,314 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 54) no Hoare annotation was computed. [2018-11-18 12:49:05,314 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2018-11-18 12:49:05,314 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 55) no Hoare annotation was computed. [2018-11-18 12:49:05,314 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 56) no Hoare annotation was computed. [2018-11-18 12:49:05,314 INFO L425 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2018-11-18 12:49:05,314 INFO L425 ceAbstractionStarter]: For program point L42(lines 42 51) no Hoare annotation was computed. [2018-11-18 12:49:05,319 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,320 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,320 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,320 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,325 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,325 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,325 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,326 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:49:05 BoogieIcfgContainer [2018-11-18 12:49:05,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:49:05,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:49:05,327 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:49:05,327 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:49:05,328 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:48:57" (3/4) ... [2018-11-18 12:49:05,330 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:49:05,333 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:49:05,334 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:49:05,337 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-18 12:49:05,337 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 12:49:05,367 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_95c1d79f-ee04-4010-bcfb-11ba03acd8f1/bin-2019/utaipan/witness.graphml [2018-11-18 12:49:05,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:49:05,368 INFO L168 Benchmark]: Toolchain (without parser) took 8568.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 959.2 MB in the beginning and 908.1 MB in the end (delta: 51.1 MB). Peak memory consumption was 182.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:49:05,369 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:49:05,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.96 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:49:05,369 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.79 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:49:05,370 INFO L168 Benchmark]: Boogie Preprocessor took 11.31 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:49:05,370 INFO L168 Benchmark]: RCFGBuilder took 168.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:49:05,370 INFO L168 Benchmark]: TraceAbstraction took 8175.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 910.8 MB in the end (delta: 208.8 MB). Peak memory consumption was 208.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:49:05,371 INFO L168 Benchmark]: Witness Printer took 40.11 ms. Allocated memory is still 1.2 GB. Free memory was 910.8 MB in the beginning and 908.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:49:05,373 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.96 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 12.79 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.31 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 168.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8175.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 910.8 MB in the end (delta: 208.8 MB). Peak memory consumption was 208.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.11 ms. Allocated memory is still 1.2 GB. Free memory was 910.8 MB in the beginning and 908.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. 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 [2018-11-18 12:49:05,377 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,377 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,377 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,377 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,378 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,378 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,378 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:49:05,378 WARN L387 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, 8.1s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 6.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 21 SDslu, 112 SDs, 0 SdLazy, 145 SolverSat, 10 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s 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, 0.6s 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...