./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/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 0.1.25-f470102 [2019-12-07 21:40:12,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:40:12,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:40:12,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:40:12,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:40:12,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:40:12,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:40:12,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:40:12,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:40:12,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:40:12,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:40:12,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:40:12,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:40:12,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:40:12,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:40:12,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:40:12,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:40:12,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:40:12,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:40:12,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:40:12,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:40:12,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:40:12,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:40:12,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:40:12,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:40:12,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:40:12,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:40:12,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:40:12,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:40:12,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:40:12,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:40:12,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:40:12,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:40:12,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:40:12,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:40:12,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:40:12,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:40:12,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:40:12,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:40:12,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:40:12,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:40:12,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:40:12,339 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:40:12,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:40:12,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:40:12,340 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:40:12,340 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:40:12,340 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:40:12,340 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:40:12,340 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:40:12,340 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:40:12,340 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:40:12,341 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:40:12,341 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:40:12,341 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:40:12,341 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:40:12,341 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:40:12,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:40:12,342 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:40:12,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:40:12,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:40:12,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:40:12,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:40:12,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:40:12,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:40:12,342 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:40:12,342 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:40:12,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:40:12,343 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:40:12,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:40:12,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:40:12,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:40:12,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:40:12,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:40:12,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:40:12,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:40:12,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:40:12,344 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:40:12,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:40:12,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:40:12,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:40:12,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:40:12,345 INFO L138 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/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/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 [2019-12-07 21:40:12,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:40:12,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:40:12,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:40:12,473 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:40:12,473 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:40:12,473 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/../../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c [2019-12-07 21:40:12,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/data/e70a48e4c/868bc12c07494a96a8ba7857bcfafb7c/FLAG0f18e457a [2019-12-07 21:40:12,975 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:40:12,976 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c [2019-12-07 21:40:12,980 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/data/e70a48e4c/868bc12c07494a96a8ba7857bcfafb7c/FLAG0f18e457a [2019-12-07 21:40:12,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/data/e70a48e4c/868bc12c07494a96a8ba7857bcfafb7c [2019-12-07 21:40:12,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:40:12,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:40:12,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:40:12,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:40:12,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:40:12,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:40:12" (1/1) ... [2019-12-07 21:40:12,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9c5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:12, skipping insertion in model container [2019-12-07 21:40:12,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:40:12" (1/1) ... [2019-12-07 21:40:13,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:40:13,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:40:13,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:40:13,185 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:40:13,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:40:13,206 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:40:13,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13 WrapperNode [2019-12-07 21:40:13,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:40:13,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:40:13,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:40:13,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:40:13,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... [2019-12-07 21:40:13,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... [2019-12-07 21:40:13,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:40:13,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:40:13,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:40:13,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:40:13,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... [2019-12-07 21:40:13,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... [2019-12-07 21:40:13,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... [2019-12-07 21:40:13,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... [2019-12-07 21:40:13,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... [2019-12-07 21:40:13,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... [2019-12-07 21:40:13,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... [2019-12-07 21:40:13,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:40:13,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:40:13,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:40:13,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:40:13,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/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 [2019-12-07 21:40:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:40:13,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:40:13,386 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:40:13,386 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 21:40:13,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:40:13 BoogieIcfgContainer [2019-12-07 21:40:13,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:40:13,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:40:13,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:40:13,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:40:13,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:40:12" (1/3) ... [2019-12-07 21:40:13,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577df836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:40:13, skipping insertion in model container [2019-12-07 21:40:13,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:40:13" (2/3) ... [2019-12-07 21:40:13,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577df836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:40:13, skipping insertion in model container [2019-12-07 21:40:13,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:40:13" (3/3) ... [2019-12-07 21:40:13,392 INFO L109 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.v+cfa-reducer.c [2019-12-07 21:40:13,398 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:40:13,402 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:40:13,409 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 21:40:13,423 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:40:13,423 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:40:13,423 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:40:13,423 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:40:13,423 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:40:13,423 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:40:13,424 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:40:13,424 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:40:13,432 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 21:40:13,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 21:40:13,436 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:40:13,436 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 21:40:13,436 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:40:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:40:13,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1724589170, now seen corresponding path program 1 times [2019-12-07 21:40:13,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:40:13,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27284922] [2019-12-07 21:40:13,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:40:13,499 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:40:13,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215980016] [2019-12-07 21:40:13,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/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 [2019-12-07 21:40:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:40:13,528 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 21:40:13,531 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:40:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:40:13,570 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:40:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:40:13,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27284922] [2019-12-07 21:40:13,582 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:40:13,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215980016] [2019-12-07 21:40:13,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:40:13,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-12-07 21:40:13,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027393210] [2019-12-07 21:40:13,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:40:13,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:40:13,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:40:13,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:40:13,599 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 5 states. [2019-12-07 21:40:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:40:13,633 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2019-12-07 21:40:13,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:40:13,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 21:40:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:40:13,641 INFO L225 Difference]: With dead ends: 17 [2019-12-07 21:40:13,641 INFO L226 Difference]: Without dead ends: 8 [2019-12-07 21:40:13,643 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:40:13,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-12-07 21:40:13,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 21:40:13,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 21:40:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-12-07 21:40:13,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-12-07 21:40:13,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:40:13,664 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-12-07 21:40:13,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:40:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-12-07 21:40:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 21:40:13,664 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:40:13,664 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:40:13,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:40:13,865 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:40:13,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:40:13,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1922594244, now seen corresponding path program 1 times [2019-12-07 21:40:13,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:40:13,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369657407] [2019-12-07 21:40:13,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:40:13,881 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:40:13,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947676647] [2019-12-07 21:40:13,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:40:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:40:13,904 WARN L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 21:40:13,905 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:40:13,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 21:40:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:40:13,945 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:40:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:40:14,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369657407] [2019-12-07 21:40:14,109 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:40:14,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947676647] [2019-12-07 21:40:14,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [712322646] [2019-12-07 21:40:14,123 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 21:40:14,124 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:40:14,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:40:14,132 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:40:14,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:40:14,253 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:40:14,506 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:40:14,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:40:14,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-12-07 21:40:14,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668876203] [2019-12-07 21:40:14,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 21:40:14,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:40:14,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 21:40:14,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-12-07 21:40:14,509 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 10 states. [2019-12-07 21:40:14,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:40:14,665 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-12-07 21:40:14,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:40:14,666 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2019-12-07 21:40:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:40:14,666 INFO L225 Difference]: With dead ends: 12 [2019-12-07 21:40:14,666 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 21:40:14,667 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-12-07 21:40:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 21:40:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 21:40:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 21:40:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-12-07 21:40:14,670 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-12-07 21:40:14,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:40:14,670 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-12-07 21:40:14,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 21:40:14,670 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-12-07 21:40:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 21:40:14,671 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:40:14,671 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 21:40:14,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:40:14,872 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:40:14,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:40:14,872 INFO L82 PathProgramCache]: Analyzing trace with hash -529183054, now seen corresponding path program 2 times [2019-12-07 21:40:14,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:40:14,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074627493] [2019-12-07 21:40:14,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:40:14,884 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:40:14,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833787554] [2019-12-07 21:40:14,885 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/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 [2019-12-07 21:40:14,924 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 21:40:14,925 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 21:40:14,926 WARN L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 21:40:14,928 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:40:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:40:14,985 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:40:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 21:40:17,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074627493] [2019-12-07 21:40:17,129 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:40:17,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833787554] [2019-12-07 21:40:17,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1939552673] [2019-12-07 21:40:17,130 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 21:40:17,130 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:40:17,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:40:17,131 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:40:17,131 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:40:17,181 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:40:17,416 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:40:17,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:40:17,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-12-07 21:40:17,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946442385] [2019-12-07 21:40:17,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 21:40:17,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:40:17,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 21:40:17,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=141, Unknown=2, NotChecked=0, Total=182 [2019-12-07 21:40:17,418 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2019-12-07 21:40:17,494 WARN L860 $PredicateComparison]: unable to prove that (and (or (= (* c_ULTIMATE.start_main_~main__n~0 (+ c_ULTIMATE.start_main_~main__n~0 1)) (* 2 c_ULTIMATE.start_main_~main__sum~0)) (<= c_ULTIMATE.start_main_~main__i~0 c_ULTIMATE.start_main_~main__n~0)) (forall ((ULTIMATE.start_main_~main__n~0 Int)) (or (< c_ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__n~0) (= (+ (* 2 c_ULTIMATE.start_main_~main__sum~0) (* 2 c_ULTIMATE.start_main_~main__i~0)) (* ULTIMATE.start_main_~main__n~0 (+ ULTIMATE.start_main_~main__n~0 1))) (< ULTIMATE.start_main_~main__n~0 c_ULTIMATE.start_main_~main__i~0)))) is different from true [2019-12-07 21:40:17,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:40:17,537 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-12-07 21:40:17,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 21:40:17,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2019-12-07 21:40:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:40:17,538 INFO L225 Difference]: With dead ends: 11 [2019-12-07 21:40:17,538 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 21:40:17,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=59, Invalid=214, Unknown=3, NotChecked=30, Total=306 [2019-12-07 21:40:17,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 21:40:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 21:40:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 21:40:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 21:40:17,539 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-12-07 21:40:17,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:40:17,539 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 21:40:17,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 21:40:17,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 21:40:17,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 21:40:17,740 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:40:17,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 21:40:21,884 WARN L192 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 35 DAG size of output: 20 [2019-12-07 21:40:21,887 INFO L242 CegarLoopResult]: At program point L33(lines 25 54) the Hoare annotation is: (and (or (= (* ULTIMATE.start_main_~main__n~0 (+ ULTIMATE.start_main_~main__n~0 1)) (* ULTIMATE.start_main_~main__sum~0 2)) (<= ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__n~0)) (forall ((ULTIMATE.start_main_~main__n~0 Int)) (or (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__n~0) (< ULTIMATE.start_main_~main__n~0 ULTIMATE.start_main_~main__i~0) (= (+ (* ULTIMATE.start_main_~main__sum~0 2) (* ULTIMATE.start_main_~main__i~0 2)) (* ULTIMATE.start_main_~main__n~0 (+ ULTIMATE.start_main_~main__n~0 1))))) (<= 1 ULTIMATE.start_main_~main__n~0)) [2019-12-07 21:40:21,887 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 21:40:21,887 INFO L249 CegarLoopResult]: At program point L50(lines 8 56) the Hoare annotation is: true [2019-12-07 21:40:21,887 INFO L246 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2019-12-07 21:40:21,888 INFO L246 CegarLoopResult]: For program point L42(lines 42 51) no Hoare annotation was computed. [2019-12-07 21:40:21,888 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 21:40:21,888 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2019-12-07 21:40:21,888 INFO L246 CegarLoopResult]: For program point L20(lines 20 54) no Hoare annotation was computed. [2019-12-07 21:40:21,888 INFO L246 CegarLoopResult]: For program point L14(lines 14 55) no Hoare annotation was computed. [2019-12-07 21:40:21,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:40:21 BoogieIcfgContainer [2019-12-07 21:40:21,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:40:21,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:40:21,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:40:21,902 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:40:21,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:40:13" (3/4) ... [2019-12-07 21:40:21,905 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 21:40:21,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 21:40:21,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 21:40:21,949 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_00aada83-37ba-4c2c-8756-f30997a339c2/bin/utaipan/witness.graphml [2019-12-07 21:40:21,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:40:21,951 INFO L168 Benchmark]: Toolchain (without parser) took 8958.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 947.8 MB in the beginning and 891.7 MB in the end (delta: 56.1 MB). Peak memory consumption was 160.5 MB. Max. memory is 11.5 GB. [2019-12-07 21:40:21,951 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:40:21,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 21:40:21,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:40:21,953 INFO L168 Benchmark]: Boogie Preprocessor took 11.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:40:21,953 INFO L168 Benchmark]: RCFGBuilder took 146.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:40:21,954 INFO L168 Benchmark]: TraceAbstraction took 8513.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 897.1 MB in the end (delta: 185.6 MB). Peak memory consumption was 185.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:40:21,954 INFO L168 Benchmark]: Witness Printer took 47.28 ms. Allocated memory is still 1.1 GB. Free memory was 897.1 MB in the beginning and 891.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:40:21,957 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 214.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 146.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8513.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 897.1 MB in the end (delta: 185.6 MB). Peak memory consumption was 185.6 MB. Max. memory is 11.5 GB. * Witness Printer took 47.28 ms. Allocated memory is still 1.1 GB. Free memory was 897.1 MB in the beginning and 891.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 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[ULTIMATE.start_main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_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 [2019-12-07 21:40:21,963 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,963 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,964 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,964 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,964 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,965 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,965 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] [2019-12-07 21:40:21,965 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0,QUANTIFIED] Derived loop invariant: ((main__n * (main__n + 1) == main__sum * 2 || main__i <= main__n) && (forall ULTIMATE.start_main_~main__n~0 : int :: (main__i < ULTIMATE.start_main_~main__n~0 || ULTIMATE.start_main_~main__n~0 < main__i) || main__sum * 2 + main__i * 2 == ULTIMATE.start_main_~main__n~0 * (ULTIMATE.start_main_~main__n~0 + 1))) && 1 <= main__n - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.1s, HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 21 SDs, 0 SdLazy, 69 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 39 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 75 FormulaSimplificationTreeSizeReductionInter, 4.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 2 QuantifiedInterpolants, 1230 SizeOfPredicates, 14 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...