./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.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_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/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 9918b49e0d76e4ce36b6a6760021b33460a8ae9b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 15:06:27,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:06:27,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:06:27,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:06:27,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:06:27,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:06:27,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:06:27,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:06:27,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:06:27,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:06:27,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:06:27,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:06:27,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:06:27,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:06:27,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:06:27,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:06:27,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:06:27,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:06:27,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:06:27,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:06:27,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:06:27,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:06:27,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:06:27,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:06:27,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:06:27,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:06:27,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:06:27,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:06:27,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:06:27,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:06:27,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:06:27,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:06:27,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:06:27,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:06:27,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:06:27,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:06:27,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:06:27,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:06:27,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:06:27,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:06:27,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:06:27,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:06:27,357 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:06:27,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:06:27,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:06:27,358 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:06:27,358 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:06:27,358 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:06:27,358 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:06:27,358 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:06:27,358 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:06:27,358 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:06:27,358 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:06:27,359 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:06:27,359 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:06:27,359 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:06:27,359 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:06:27,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:06:27,360 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:06:27,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:06:27,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:06:27,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:06:27,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:06:27,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:06:27,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:06:27,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:06:27,360 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:06:27,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:06:27,361 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:06:27,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:06:27,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:06:27,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:06:27,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:06:27,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:06:27,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:06:27,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:06:27,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:06:27,362 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:06:27,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:06:27,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:06:27,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:06:27,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:06:27,362 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_1eb91d9a-145b-42a3-9593-0fff476592d8/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 -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2019-12-07 15:06:27,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:06:27,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:06:27,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:06:27,471 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:06:27,471 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:06:27,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/../../sv-benchmarks/c/bitvector/gcd_4.c [2019-12-07 15:06:27,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/data/76f4773e4/bca45c448bf841fcbf5a0e3bf8e64873/FLAGae69dce89 [2019-12-07 15:06:27,968 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:06:27,968 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/sv-benchmarks/c/bitvector/gcd_4.c [2019-12-07 15:06:27,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/data/76f4773e4/bca45c448bf841fcbf5a0e3bf8e64873/FLAGae69dce89 [2019-12-07 15:06:27,980 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/data/76f4773e4/bca45c448bf841fcbf5a0e3bf8e64873 [2019-12-07 15:06:27,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:06:27,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:06:27,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:06:27,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:06:27,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:06:27,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:06:27" (1/1) ... [2019-12-07 15:06:27,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354778c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:27, skipping insertion in model container [2019-12-07 15:06:27,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:06:27" (1/1) ... [2019-12-07 15:06:27,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:06:28,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:06:28,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:06:28,104 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:06:28,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:06:28,159 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:06:28,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28 WrapperNode [2019-12-07 15:06:28,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:06:28,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:06:28,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:06:28,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:06:28,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... [2019-12-07 15:06:28,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... [2019-12-07 15:06:28,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:06:28,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:06:28,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:06:28,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:06:28,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... [2019-12-07 15:06:28,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... [2019-12-07 15:06:28,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... [2019-12-07 15:06:28,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... [2019-12-07 15:06:28,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... [2019-12-07 15:06:28,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... [2019-12-07 15:06:28,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... [2019-12-07 15:06:28,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:06:28,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:06:28,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:06:28,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:06:28,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/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 15:06:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:06:28,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:06:28,398 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:06:28,399 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-07 15:06:28,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:06:28 BoogieIcfgContainer [2019-12-07 15:06:28,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:06:28,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:06:28,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:06:28,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:06:28,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:06:27" (1/3) ... [2019-12-07 15:06:28,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1582ae2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:06:28, skipping insertion in model container [2019-12-07 15:06:28,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:06:28" (2/3) ... [2019-12-07 15:06:28,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1582ae2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:06:28, skipping insertion in model container [2019-12-07 15:06:28,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:06:28" (3/3) ... [2019-12-07 15:06:28,404 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2019-12-07 15:06:28,410 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:06:28,414 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 15:06:28,421 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 15:06:28,435 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:06:28,435 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:06:28,436 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:06:28,436 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:06:28,436 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:06:28,436 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:06:28,436 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:06:28,436 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:06:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-12-07 15:06:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 15:06:28,450 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:06:28,451 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 15:06:28,451 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:06:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:06:28,455 INFO L82 PathProgramCache]: Analyzing trace with hash 103949833, now seen corresponding path program 1 times [2019-12-07 15:06:28,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:06:28,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389519672] [2019-12-07 15:06:28,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:06:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:06:28,551 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 15:06:28,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389519672] [2019-12-07 15:06:28,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:06:28,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:06:28,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119251276] [2019-12-07 15:06:28,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:06:28,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:06:28,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:06:28,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:06:28,566 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-12-07 15:06:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:06:28,584 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2019-12-07 15:06:28,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:06:28,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 15:06:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:06:28,591 INFO L225 Difference]: With dead ends: 31 [2019-12-07 15:06:28,591 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 15:06:28,593 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:06:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 15:06:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 15:06:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:06:28,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 15:06:28,614 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2019-12-07 15:06:28,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:06:28,614 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 15:06:28,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:06:28,614 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 15:06:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 15:06:28,615 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:06:28,615 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:06:28,615 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:06:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:06:28,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1069367528, now seen corresponding path program 1 times [2019-12-07 15:06:28,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:06:28,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238223098] [2019-12-07 15:06:28,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:06:28,621 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:06:28,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128221780] [2019-12-07 15:06:28,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/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 15:06:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:06:28,646 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:06:28,649 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:06:28,659 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 15:06:28,660 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:06:28,665 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 15:06:28,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238223098] [2019-12-07 15:06:28,666 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:06:28,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128221780] [2019-12-07 15:06:28,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:06:28,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-12-07 15:06:28,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039676524] [2019-12-07 15:06:28,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:06:28,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:06:28,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:06:28,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:06:28,668 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-12-07 15:06:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:06:28,675 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2019-12-07 15:06:28,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:06:28,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-07 15:06:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:06:28,676 INFO L225 Difference]: With dead ends: 28 [2019-12-07 15:06:28,676 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 15:06:28,676 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:06:28,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 15:06:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 15:06:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 15:06:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 15:06:28,679 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2019-12-07 15:06:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:06:28,679 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 15:06:28,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:06:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 15:06:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:06:28,680 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:06:28,680 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:06:28,881 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:06:28,881 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:06:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:06:28,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1212499945, now seen corresponding path program 1 times [2019-12-07 15:06:28,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:06:28,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170944271] [2019-12-07 15:06:28,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:06:28,909 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:06:28,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393052660] [2019-12-07 15:06:28,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/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 15:06:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:06:28,971 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 15:06:28,972 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:06:28,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:06:29,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:06:29,013 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 15:06:29,013 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:06:29,038 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 15:06:29,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170944271] [2019-12-07 15:06:29,038 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:06:29,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393052660] [2019-12-07 15:06:29,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [874003255] [2019-12-07 15:06:29,058 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 15:06:29,058 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:06:29,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:06:29,067 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:06:29,068 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:06:29,269 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:06:29,486 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:06:29,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:06:29,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-07 15:06:29,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45307065] [2019-12-07 15:06:29,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:06:29,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:06:29,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:06:29,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-12-07 15:06:29,487 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2019-12-07 15:06:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:06:29,514 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-12-07 15:06:29,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:06:29,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-12-07 15:06:29,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:06:29,515 INFO L225 Difference]: With dead ends: 30 [2019-12-07 15:06:29,515 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 15:06:29,516 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:06:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 15:06:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 15:06:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 15:06:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-12-07 15:06:29,520 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2019-12-07 15:06:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:06:29,520 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-12-07 15:06:29,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:06:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-12-07 15:06:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:06:29,520 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:06:29,521 INFO L410 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2019-12-07 15:06:29,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:06:29,721 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:06:29,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:06:29,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1377268169, now seen corresponding path program 2 times [2019-12-07 15:06:29,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:06:29,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610967275] [2019-12-07 15:06:29,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:06:29,735 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:06:29,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750824391] [2019-12-07 15:06:29,735 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/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 15:06:29,769 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 15:06:29,769 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:06:29,770 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 15:06:29,771 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:06:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:06:29,814 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:06:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:06:29,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610967275] [2019-12-07 15:06:29,925 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:06:29,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750824391] [2019-12-07 15:06:29,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737114669] [2019-12-07 15:06:29,926 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 15:06:29,927 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:06:29,927 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:06:29,927 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:06:29,927 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:06:30,015 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:06:30,265 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:06:30,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:06:30,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-07 15:06:30,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747703618] [2019-12-07 15:06:30,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 15:06:30,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:06:30,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:06:30,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2019-12-07 15:06:30,267 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2019-12-07 15:06:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:06:30,337 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2019-12-07 15:06:30,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:06:30,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2019-12-07 15:06:30,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:06:30,337 INFO L225 Difference]: With dead ends: 31 [2019-12-07 15:06:30,337 INFO L226 Difference]: Without dead ends: 19 [2019-12-07 15:06:30,338 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-12-07 15:06:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-07 15:06:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-12-07 15:06:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 15:06:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-12-07 15:06:30,341 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2019-12-07 15:06:30,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:06:30,341 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-12-07 15:06:30,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 15:06:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-12-07 15:06:30,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:06:30,342 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:06:30,342 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2019-12-07 15:06:30,542 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:06:30,543 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:06:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:06:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash -251204776, now seen corresponding path program 3 times [2019-12-07 15:06:30,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:06:30,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713380460] [2019-12-07 15:06:30,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:06:30,571 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:06:30,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554979111] [2019-12-07 15:06:30,572 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:06:30,604 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:06:30,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:06:30,605 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 15:06:30,606 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:06:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:06:30,632 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:06:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:06:30,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713380460] [2019-12-07 15:06:30,820 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:06:30,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554979111] [2019-12-07 15:06:30,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [858616884] [2019-12-07 15:06:30,821 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 15:06:30,821 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:06:30,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:06:30,822 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:06:30,822 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:06:30,889 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:06:31,099 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:06:31,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:06:31,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-12-07 15:06:31,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099013073] [2019-12-07 15:06:31,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 15:06:31,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:06:31,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 15:06:31,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2019-12-07 15:06:31,101 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 12 states. [2019-12-07 15:06:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:06:31,359 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-12-07 15:06:31,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 15:06:31,360 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2019-12-07 15:06:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:06:31,360 INFO L225 Difference]: With dead ends: 36 [2019-12-07 15:06:31,360 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 15:06:31,361 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2019-12-07 15:06:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 15:06:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 15:06:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 15:06:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-12-07 15:06:31,365 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 10 [2019-12-07 15:06:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:06:31,366 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-12-07 15:06:31,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 15:06:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-12-07 15:06:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:06:31,366 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:06:31,366 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2019-12-07 15:06:31,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:06:31,568 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:06:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:06:31,568 INFO L82 PathProgramCache]: Analyzing trace with hash 805741481, now seen corresponding path program 4 times [2019-12-07 15:06:31,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:06:31,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353750939] [2019-12-07 15:06:31,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:06:31,589 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:06:31,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114929773] [2019-12-07 15:06:31,590 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/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 [2019-12-07 15:06:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:06:31,626 WARN L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 28 conjunts are in the unsatisfiable core [2019-12-07 15:06:31,627 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:06:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:06:31,734 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:06:34,570 WARN L192 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-12-07 15:06:34,831 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-12-07 15:06:35,847 WARN L192 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 158 [2019-12-07 15:06:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:06:35,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353750939] [2019-12-07 15:06:35,851 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:06:35,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114929773] [2019-12-07 15:06:35,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2130020724] [2019-12-07 15:06:35,852 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 15:06:35,852 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:06:35,852 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:06:35,852 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:06:35,852 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:06:35,910 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:06:36,158 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:06:36,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:06:36,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2019-12-07 15:06:36,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956940314] [2019-12-07 15:06:36,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 15:06:36,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:06:36,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 15:06:36,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2019-12-07 15:06:36,160 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 18 states. [2019-12-07 15:06:36,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:06:36,273 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-12-07 15:06:36,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 15:06:36,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 11 [2019-12-07 15:06:36,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:06:36,274 INFO L225 Difference]: With dead ends: 34 [2019-12-07 15:06:36,274 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 15:06:36,275 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2019-12-07 15:06:36,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 15:06:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 15:06:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 15:06:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-12-07 15:06:36,278 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 11 [2019-12-07 15:06:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:06:36,278 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-12-07 15:06:36,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 15:06:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-12-07 15:06:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 15:06:36,279 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:06:36,279 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:06:36,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:06:36,480 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:06:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:06:36,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1223606380, now seen corresponding path program 1 times [2019-12-07 15:06:36,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:06:36,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425107681] [2019-12-07 15:06:36,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:06:36,495 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:06:36,495 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370455196] [2019-12-07 15:06:36,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:06:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:06:36,546 WARN L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-07 15:06:36,547 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:06:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:06:36,847 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:06:39,477 WARN L192 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-12-07 15:06:49,978 WARN L192 SmtUtils]: Spent 10.42 s on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2019-12-07 15:10:48,719 WARN L192 SmtUtils]: Spent 3.89 m on a formula simplification. DAG size of input: 306 DAG size of output: 289 [2019-12-07 15:10:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:10:48,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425107681] [2019-12-07 15:10:48,727 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:10:48,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370455196] [2019-12-07 15:10:48,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1395078817] [2019-12-07 15:10:48,728 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 15:10:48,728 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:10:48,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:10:48,728 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:10:48,728 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:10:48,803 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:10:49,397 WARN L192 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 30 [2019-12-07 15:10:50,498 WARN L192 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 35 [2019-12-07 15:10:50,498 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:10:50,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:10:50,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2019-12-07 15:10:50,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152117260] [2019-12-07 15:10:50,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 15:10:50,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:10:50,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 15:10:50,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2019-12-07 15:10:50,499 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 22 states. [2019-12-07 15:10:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:10:50,677 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2019-12-07 15:10:50,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 15:10:50,678 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 13 [2019-12-07 15:10:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:10:50,678 INFO L225 Difference]: With dead ends: 18 [2019-12-07 15:10:50,678 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:10:50,679 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 253.8s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2019-12-07 15:10:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:10:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:10:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:10:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:10:50,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-12-07 15:10:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:10:50,679 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:10:50,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 15:10:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:10:50,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:10:50,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:10:50,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:10:51,177 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 46 [2019-12-07 15:10:51,229 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-12-07 15:10:51,229 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:10:51,229 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-12-07 15:10:51,230 INFO L242 CegarLoopResult]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~a (* ULTIMATE.start_main_~y~0 3)))) (.cse0 (= ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_main_~x~0 63)) (.cse2 (= ULTIMATE.start_main_~y~0 18))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~a 36))) (and .cse0 .cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~a ULTIMATE.start_main_~y~0)) .cse2) (and .cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~a 54)) .cse2 (= ULTIMATE.start_gcd_test_~a 9)) (let ((.cse3 (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~x~0))) (and (= .cse3 (* ULTIMATE.start_main_~y~0 4)) (= ULTIMATE.start_gcd_test_~b 9) .cse4 (= 72 .cse3))) (let ((.cse5 (+ ULTIMATE.start_gcd_test_~b (* ULTIMATE.start_main_~x~0 2)))) (and .cse1 .cse4 (= 126 .cse5) (= (* ULTIMATE.start_main_~y~0 7) .cse5))) (and .cse0 .cse1 (= ULTIMATE.start_gcd_test_~a ULTIMATE.start_main_~x~0) .cse2))) [2019-12-07 15:10:51,230 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:10:51,230 INFO L246 CegarLoopResult]: For program point L13-1(lines 11 27) no Hoare annotation was computed. [2019-12-07 15:10:51,230 INFO L246 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-12-07 15:10:51,230 INFO L242 CegarLoopResult]: At program point L5-2(lines 4 9) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~y~0 7)) (.cse1 (* ULTIMATE.start_main_~x~0 2))) (and (= ULTIMATE.start_main_~x~0 (+ |ULTIMATE.start_gcd_test_#res| (* ULTIMATE.start_main_~y~0 3))) (= .cse0 .cse1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~a 54)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 18) (= .cse0 (+ ULTIMATE.start_gcd_test_~b .cse1)) (= ULTIMATE.start_main_~y~0 (* ULTIMATE.start_main_~g~0 2)))) [2019-12-07 15:10:51,230 INFO L246 CegarLoopResult]: For program point L5-3(lines 5 7) no Hoare annotation was computed. [2019-12-07 15:10:51,231 INFO L242 CegarLoopResult]: At program point L5-5(lines 4 9) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~y~0 7)) (.cse1 (* ULTIMATE.start_main_~x~0 2))) (and (= ULTIMATE.start_main_~x~0 (+ |ULTIMATE.start_gcd_test_#res| (* ULTIMATE.start_main_~y~0 3))) (= .cse0 .cse1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~a 54)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 18) (= .cse0 (+ ULTIMATE.start_gcd_test_~b .cse1)) (= ULTIMATE.start_main_~y~0 (* ULTIMATE.start_main_~g~0 2)))) [2019-12-07 15:10:51,231 INFO L246 CegarLoopResult]: For program point L5-6(lines 5 7) no Hoare annotation was computed. [2019-12-07 15:10:51,231 INFO L242 CegarLoopResult]: At program point L5-8(lines 4 9) the Hoare annotation is: (not (= ULTIMATE.start_gcd_test_~a 0)) [2019-12-07 15:10:51,231 INFO L242 CegarLoopResult]: At program point L26(lines 10 27) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~x~0 2))) (let ((.cse0 (* ULTIMATE.start_main_~y~0 7)) (.cse2 (+ ULTIMATE.start_gcd_test_~b .cse1))) (and (= .cse0 .cse1) (= ULTIMATE.start_main_~x~0 (+ |ULTIMATE.start_gcd_test_#res| 54)) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~a (* ULTIMATE.start_main_~y~0 3))) (= 126 .cse2) (= .cse0 .cse2)))) [2019-12-07 15:10:51,231 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-12-07 15:10:51,231 INFO L246 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2019-12-07 15:10:51,231 INFO L246 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-12-07 15:10:51,231 INFO L246 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2019-12-07 15:10:51,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:10:51 BoogieIcfgContainer [2019-12-07 15:10:51,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:10:51,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:10:51,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:10:51,248 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:10:51,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:06:28" (3/4) ... [2019-12-07 15:10:51,250 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:10:51,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-12-07 15:10:51,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 15:10:51,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:10:51,279 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y * 7 == x * 2 && x == \result + 54) && x == a + y * 3) && 126 == b + x * 2) && y * 7 == b + x * 2 [2019-12-07 15:10:51,279 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((x == \result + y * 3 && y * 7 == x * 2) && x == a + 54) && 1 == cond) && y == 18) && y * 7 == b + x * 2) && y == g * 2 [2019-12-07 15:10:51,280 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((x == \result + y * 3 && y * 7 == x * 2) && x == a + 54) && 1 == cond) && y == 18) && y * 7 == b + x * 2) && y == g * 2 [2019-12-07 15:10:51,296 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1eb91d9a-145b-42a3-9593-0fff476592d8/bin/utaipan/witness.graphml [2019-12-07 15:10:51,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:10:51,297 INFO L168 Benchmark]: Toolchain (without parser) took 263314.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 940.8 MB in the beginning and 901.2 MB in the end (delta: 39.6 MB). Peak memory consumption was 147.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:51,298 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:10:51,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:51,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.85 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 15:10:51,299 INFO L168 Benchmark]: Boogie Preprocessor took 16.83 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 15:10:51,299 INFO L168 Benchmark]: RCFGBuilder took 199.60 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:51,299 INFO L168 Benchmark]: TraceAbstraction took 262847.66 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.1 MB). Free memory was 1.1 GB in the beginning and 903.3 MB in the end (delta: 174.4 MB). Peak memory consumption was 177.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:51,300 INFO L168 Benchmark]: Witness Printer took 48.37 ms. Allocated memory is still 1.1 GB. Free memory was 903.3 MB in the beginning and 901.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:51,302 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.85 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 16.83 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 199.60 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 262847.66 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.1 MB). Free memory was 1.1 GB in the beginning and 903.3 MB in the end (delta: 174.4 MB). Peak memory consumption was 177.6 MB. Max. memory is 11.5 GB. * Witness Printer took 48.37 ms. Allocated memory is still 1.1 GB. Free memory was 903.3 MB in the beginning and 901.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((y * 7 == x * 2 && x == \result + 54) && x == a + y * 3) && 126 == b + x * 2) && y * 7 == b + x * 2 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: (((((x == \result + y * 3 && y * 7 == x * 2) && x == a + 54) && 1 == cond) && y == 18) && y * 7 == b + x * 2) && y == g * 2 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((((((b == y && x == 63) && y == 18) && x == a + 36) || (((b == y && x == 63) && x == a + y) && y == 18)) || (((b == y && x == a + 54) && y == 18) && a == 9)) || (((b + x == y * 4 && b == 9) && x == a + y * 3) && 72 == b + x)) || (((x == 63 && x == a + y * 3) && 126 == b + x * 2) && y * 7 == b + x * 2)) || (((b == y && x == 63) && a == x) && y == 18) - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: !(a == 0) - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: (((((x == \result + y * 3 && y * 7 == x * 2) && x == a + 54) && 1 == cond) && y == 18) && y * 7 == b + x * 2) && y == g * 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 3 error locations. Result: SAFE, OverallTime: 262.4s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 75 SDtfs, 202 SDslu, 131 SDs, 0 SdLazy, 270 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 259.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=5, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 229 HoareAnnotationTreeSize, 5 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 991 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 256.8s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 48781 SizeOfPredicates, 43 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 0/94 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...