./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum20.i --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_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum20.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/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 d02e722fa6530375aea2bbc43a68e422ad66c6f3 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 21:54:32,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:54:32,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:54:32,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:54:32,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:54:32,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:54:32,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:54:32,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:54:32,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:54:32,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:54:32,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:54:32,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:54:32,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:54:32,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:54:32,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:54:32,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:54:32,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:54:32,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:54:32,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:54:32,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:54:32,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:54:32,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:54:32,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:54:32,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:54:32,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:54:32,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:54:32,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:54:32,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:54:32,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:54:32,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:54:32,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:54:32,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:54:32,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:54:32,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:54:32,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:54:32,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:54:32,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:54:32,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:54:32,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:54:32,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:54:32,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:54:32,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:54:32,299 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:54:32,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:54:32,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:54:32,300 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:54:32,300 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:54:32,300 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:54:32,300 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:54:32,300 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:54:32,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:54:32,301 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:54:32,301 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:54:32,301 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:54:32,301 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:54:32,301 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:54:32,301 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:54:32,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:54:32,302 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:54:32,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:54:32,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:54:32,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:54:32,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:54:32,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:54:32,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:54:32,303 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:54:32,303 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:54:32,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:54:32,303 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:54:32,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:54:32,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:54:32,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:54:32,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:54:32,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:54:32,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:54:32,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:54:32,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:54:32,304 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:54:32,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:54:32,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:54:32,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:54:32,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:54:32,304 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_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/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 -> d02e722fa6530375aea2bbc43a68e422ad66c6f3 [2019-12-07 21:54:32,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:54:32,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:54:32,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:54:32,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:54:32,413 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:54:32,413 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum20.i [2019-12-07 21:54:32,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/data/e80bd1255/faeebe7b654b46c5b3ba470b395ead88/FLAG67cb2d068 [2019-12-07 21:54:32,952 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:54:32,953 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/sv-benchmarks/c/reducercommutativity/rangesum20.i [2019-12-07 21:54:32,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/data/e80bd1255/faeebe7b654b46c5b3ba470b395ead88/FLAG67cb2d068 [2019-12-07 21:54:33,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/data/e80bd1255/faeebe7b654b46c5b3ba470b395ead88 [2019-12-07 21:54:33,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:54:33,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:54:33,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:54:33,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:54:33,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:54:33,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0dd652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33, skipping insertion in model container [2019-12-07 21:54:33,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:54:33,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:54:33,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:54:33,620 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:54:33,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:54:33,645 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:54:33,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33 WrapperNode [2019-12-07 21:54:33,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:54:33,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:54:33,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:54:33,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:54:33,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:54:33,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:54:33,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:54:33,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:54:33,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... [2019-12-07 21:54:33,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:54:33,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:54:33,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:54:33,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:54:33,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/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 21:54:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 21:54:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:54:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:54:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 21:54:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 21:54:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 21:54:34,271 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:54:34,271 INFO L287 CfgBuilder]: Removed 17 assume(true) statements. [2019-12-07 21:54:34,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:54:34 BoogieIcfgContainer [2019-12-07 21:54:34,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:54:34,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:54:34,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:54:34,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:54:34,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:54:33" (1/3) ... [2019-12-07 21:54:34,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7585d430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:54:34, skipping insertion in model container [2019-12-07 21:54:34,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:54:33" (2/3) ... [2019-12-07 21:54:34,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7585d430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:54:34, skipping insertion in model container [2019-12-07 21:54:34,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:54:34" (3/3) ... [2019-12-07 21:54:34,276 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum20.i [2019-12-07 21:54:34,282 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:54:34,287 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:54:34,294 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 21:54:34,307 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:54:34,308 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:54:34,308 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:54:34,308 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:54:34,308 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:54:34,308 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:54:34,308 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:54:34,308 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:54:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 21:54:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 21:54:34,320 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:54:34,321 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:54:34,321 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:54:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:54:34,324 INFO L82 PathProgramCache]: Analyzing trace with hash -2021687706, now seen corresponding path program 1 times [2019-12-07 21:54:34,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:54:34,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588064145] [2019-12-07 21:54:34,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:54:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:54:34,431 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 21:54:34,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588064145] [2019-12-07 21:54:34,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:54:34,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:54:34,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837390337] [2019-12-07 21:54:34,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:54:34,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:54:34,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:54:34,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:54:34,451 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-12-07 21:54:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:54:34,467 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-12-07 21:54:34,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:54:34,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 21:54:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:54:34,474 INFO L225 Difference]: With dead ends: 21 [2019-12-07 21:54:34,474 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 21:54:34,476 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 21:54:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 21:54:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 21:54:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 21:54:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-12-07 21:54:34,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-12-07 21:54:34,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:54:34,497 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-12-07 21:54:34,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:54:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-12-07 21:54:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 21:54:34,498 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:54:34,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:54:34,498 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:54:34,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:54:34,498 INFO L82 PathProgramCache]: Analyzing trace with hash -560701834, now seen corresponding path program 1 times [2019-12-07 21:54:34,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:54:34,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960232499] [2019-12-07 21:54:34,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:54:34,510 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:54:34,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433075611] [2019-12-07 21:54:34,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/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 21:54:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:54:34,550 INFO L264 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:54:34,554 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:54:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 21:54:34,566 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:54:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 21:54:34,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960232499] [2019-12-07 21:54:34,577 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:54:34,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433075611] [2019-12-07 21:54:34,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:54:34,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 21:54:34,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113645919] [2019-12-07 21:54:34,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:54:34,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:54:34,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:54:34,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:54:34,579 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-12-07 21:54:34,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:54:34,613 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-12-07 21:54:34,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:54:34,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 21:54:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:54:34,613 INFO L225 Difference]: With dead ends: 22 [2019-12-07 21:54:34,613 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 21:54:34,614 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 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 21:54:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 21:54:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 21:54:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 21:54:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-12-07 21:54:34,617 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-12-07 21:54:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:54:34,617 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 21:54:34,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:54:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-12-07 21:54:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 21:54:34,617 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:54:34,617 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:54:34,818 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:54:34,819 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:54:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:54:34,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1964460554, now seen corresponding path program 1 times [2019-12-07 21:54:34,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:54:34,821 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145709304] [2019-12-07 21:54:34,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:54:34,862 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:54:34,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356277042] [2019-12-07 21:54:34,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/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 21:54:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:54:34,905 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:54:34,906 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:54:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 21:54:34,911 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:54:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 21:54:34,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145709304] [2019-12-07 21:54:34,917 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:54:34,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356277042] [2019-12-07 21:54:34,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:54:34,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 21:54:34,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841200849] [2019-12-07 21:54:34,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:54:34,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:54:34,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:54:34,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:54:34,918 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-12-07 21:54:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:54:34,929 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-12-07 21:54:34,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:54:34,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 21:54:34,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:54:34,930 INFO L225 Difference]: With dead ends: 24 [2019-12-07 21:54:34,931 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 21:54:34,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 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 21:54:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 21:54:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 21:54:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 21:54:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-12-07 21:54:34,935 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-12-07 21:54:34,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:54:34,935 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-12-07 21:54:34,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:54:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-12-07 21:54:34,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 21:54:34,936 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:54:34,936 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:54:35,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:54:35,138 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:54:35,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:54:35,139 INFO L82 PathProgramCache]: Analyzing trace with hash -183512330, now seen corresponding path program 1 times [2019-12-07 21:54:35,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:54:35,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609453892] [2019-12-07 21:54:35,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:54:35,178 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:54:35,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137317509] [2019-12-07 21:54:35,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/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 21:54:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:54:35,228 INFO L264 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 21:54:35,230 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:54:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 21:54:35,241 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:54:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 21:54:35,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609453892] [2019-12-07 21:54:35,252 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:54:35,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137317509] [2019-12-07 21:54:35,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077282862] [2019-12-07 21:54:35,267 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 21:54:35,267 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:54:35,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:54:35,275 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:54:35,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:54:35,659 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:35,670 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:35,681 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:35,718 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:35,808 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:35,818 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:35,827 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:35,836 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:38,514 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:39,399 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:39,492 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:39,528 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:39,665 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:39,968 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:41,768 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:41,855 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:43,978 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:46,209 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_62| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| (* ULTIMATE.start_main_~i~2 4))))) [2019-12-07 21:54:48,257 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:50,299 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:50,906 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:54:51,428 WARN L192 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 21:54:53,908 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 21:54:53,909 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:54:53,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:54:53,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-07 21:54:53,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774339692] [2019-12-07 21:54:53,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:54:53,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:54:53,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:54:53,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-12-07 21:54:53,910 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2019-12-07 21:54:53,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:54:53,919 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2019-12-07 21:54:53,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:54:53,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-12-07 21:54:53,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:54:53,919 INFO L225 Difference]: With dead ends: 36 [2019-12-07 21:54:53,919 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 21:54:53,920 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-12-07 21:54:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 21:54:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 21:54:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 21:54:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-12-07 21:54:53,922 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2019-12-07 21:54:53,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:54:53,922 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-12-07 21:54:53,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:54:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-12-07 21:54:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 21:54:53,923 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:54:53,923 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:54:54,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:54:54,125 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:54:54,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:54:54,126 INFO L82 PathProgramCache]: Analyzing trace with hash -183531802, now seen corresponding path program 2 times [2019-12-07 21:54:54,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:54:54,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514226056] [2019-12-07 21:54:54,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:54:54,165 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:54:54,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140068636] [2019-12-07 21:54:54,165 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/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 21:54:54,211 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 21:54:54,211 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 21:54:54,212 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 21:54:54,213 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:54:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-12-07 21:54:54,222 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:54:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-12-07 21:54:54,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514226056] [2019-12-07 21:54:54,237 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:54:54,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140068636] [2019-12-07 21:54:54,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1139035683] [2019-12-07 21:54:54,238 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 21:54:54,238 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:54:54,238 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:54:54,239 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:54:54,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:54:54,414 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:54,443 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:54,502 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:54,510 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:54,547 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:54,554 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:54,577 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:54,584 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:54,771 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#x~0.offset| 4) |ULTIMATE.start_rangesum_#in~x.offset|) [2019-12-07 21:54:54,833 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)) (select .cse0 |ULTIMATE.start_main_~#x~0.offset|))) [2019-12-07 21:54:54,895 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)) (select .cse0 |ULTIMATE.start_main_~#x~0.offset|))) [2019-12-07 21:54:54,957 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:54:55,019 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:54:55,116 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ULTIMATE.start_main_~temp~0 (select (select |v_#memory_int_72| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|)) [2019-12-07 21:54:55,180 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:54:55,243 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:54:55,306 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:54:55,369 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:54:55,740 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:56,194 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:56,214 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:56,281 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:56,325 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:54:56,364 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:00,408 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#x~0.offset| (+ |ULTIMATE.start_main_~#x~0.offset| 4)) [2019-12-07 21:55:02,645 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:03,756 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:07,602 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:07,631 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:07,655 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:08,376 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:08,465 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:55:08,867 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 21:55:12,076 WARN L192 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 21:55:12,077 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:12,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:55:12,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-12-07 21:55:12,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875054273] [2019-12-07 21:55:12,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 21:55:12,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:55:12,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 21:55:12,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-12-07 21:55:12,078 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2019-12-07 21:55:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:55:12,149 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-12-07 21:55:12,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 21:55:12,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-07 21:55:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:55:12,150 INFO L225 Difference]: With dead ends: 45 [2019-12-07 21:55:12,150 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 21:55:12,151 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-12-07 21:55:12,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 21:55:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-12-07 21:55:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 21:55:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-12-07 21:55:12,154 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2019-12-07 21:55:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:55:12,154 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-12-07 21:55:12,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 21:55:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-12-07 21:55:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 21:55:12,155 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:55:12,155 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:55:12,356 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:55:12,357 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:55:12,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:55:12,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1522987546, now seen corresponding path program 3 times [2019-12-07 21:55:12,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:55:12,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796464998] [2019-12-07 21:55:12,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:55:12,397 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:55:12,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445993748] [2019-12-07 21:55:12,397 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/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 21:55:12,444 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 21:55:12,444 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 21:55:12,445 INFO L264 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 21:55:12,447 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:55:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-12-07 21:55:12,463 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:55:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-12-07 21:55:12,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796464998] [2019-12-07 21:55:12,493 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:12,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445993748] [2019-12-07 21:55:12,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [945337481] [2019-12-07 21:55:12,494 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 21:55:12,494 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:55:12,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:55:12,494 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:55:12,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:55:12,616 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:12,645 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:12,669 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:12,708 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:12,735 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:12,741 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:12,746 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:12,838 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:12,919 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:13,252 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:13,505 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:13,552 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:15,848 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:15,894 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:18,341 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:18,555 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:20,751 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:21,193 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:23,315 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:23,402 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:23,498 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:55:23,926 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 21:55:24,243 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 21:55:24,243 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:24,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:55:24,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-12-07 21:55:24,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365718917] [2019-12-07 21:55:24,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 21:55:24,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:55:24,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 21:55:24,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-12-07 21:55:24,245 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2019-12-07 21:55:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:55:24,260 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2019-12-07 21:55:24,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 21:55:24,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2019-12-07 21:55:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:55:24,261 INFO L225 Difference]: With dead ends: 66 [2019-12-07 21:55:24,261 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 21:55:24,262 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-12-07 21:55:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 21:55:24,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-12-07 21:55:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 21:55:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-12-07 21:55:24,265 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 32 [2019-12-07 21:55:24,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:55:24,265 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-12-07 21:55:24,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 21:55:24,265 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-12-07 21:55:24,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-07 21:55:24,266 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:55:24,266 INFO L410 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:55:24,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:55:24,467 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:55:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:55:24,468 INFO L82 PathProgramCache]: Analyzing trace with hash -829320218, now seen corresponding path program 4 times [2019-12-07 21:55:24,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:55:24,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372480584] [2019-12-07 21:55:24,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:55:24,486 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:55:24,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173929567] [2019-12-07 21:55:24,487 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/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 21:55:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:55:24,531 INFO L264 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 21:55:24,533 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:55:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-12-07 21:55:24,585 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:55:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-12-07 21:55:24,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372480584] [2019-12-07 21:55:24,706 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:24,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173929567] [2019-12-07 21:55:24,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1824873551] [2019-12-07 21:55:24,708 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 21:55:24,708 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:55:24,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:55:24,708 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:55:24,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:55:24,889 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:24,899 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:24,910 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:24,921 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:24,930 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:24,993 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:25,003 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:25,175 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:25,184 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:25,217 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:25,226 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:25,314 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:25,431 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:27,153 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:27,267 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:27,275 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:27,283 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:27,290 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:27,298 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:27,406 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:27,413 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:27,499 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:29,572 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:29,881 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:30,141 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:30,312 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:30,360 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:30,409 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:35,849 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:36,274 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:36,561 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:36,597 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:37,107 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:37,248 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:39,404 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (* ULTIMATE.start_main_~i~2 4))) (= (+ |ULTIMATE.start_main_~#x~0.offset| .cse0 (- 4)) (+ |ULTIMATE.start_main_~#x~0.offset| .cse0))) [2019-12-07 21:55:39,632 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:55:40,082 WARN L192 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 21:55:44,008 WARN L192 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 21:55:44,008 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:44,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:55:44,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2019-12-07 21:55:44,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979185629] [2019-12-07 21:55:44,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 21:55:44,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:55:44,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 21:55:44,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2019-12-07 21:55:44,009 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 22 states. [2019-12-07 21:55:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:55:44,031 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2019-12-07 21:55:44,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-07 21:55:44,032 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 38 [2019-12-07 21:55:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:55:44,032 INFO L225 Difference]: With dead ends: 76 [2019-12-07 21:55:44,032 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 21:55:44,033 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2019-12-07 21:55:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 21:55:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-12-07 21:55:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-12-07 21:55:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-12-07 21:55:44,037 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 38 [2019-12-07 21:55:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:55:44,037 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2019-12-07 21:55:44,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 21:55:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2019-12-07 21:55:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-12-07 21:55:44,038 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:55:44,038 INFO L410 BasicCegarLoop]: trace histogram [20, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:55:44,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:55:44,239 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:55:44,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:55:44,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1018895846, now seen corresponding path program 5 times [2019-12-07 21:55:44,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:55:44,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001937193] [2019-12-07 21:55:44,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:55:44,271 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:55:44,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786482065] [2019-12-07 21:55:44,271 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:55:44,316 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 21:55:44,316 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 21:55:44,317 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 21:55:44,319 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:55:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-12-07 21:55:44,328 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:55:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-12-07 21:55:44,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001937193] [2019-12-07 21:55:44,343 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:44,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786482065] [2019-12-07 21:55:44,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151242246] [2019-12-07 21:55:44,344 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 21:55:44,344 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:55:44,344 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:55:44,344 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:55:44,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:55:44,472 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:44,492 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:44,498 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:44,503 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:44,709 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#x~0.offset| 4) |ULTIMATE.start_rangesum_#in~x.offset|) [2019-12-07 21:55:44,771 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_118| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 21:55:44,833 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_118| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 21:55:44,896 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_118| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:55:44,957 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_118| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:55:45,055 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_118| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:55:45,119 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:55:45,182 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:55:45,245 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:55:45,308 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:55:45,363 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:45,376 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:45,708 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:45,726 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:45,833 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:46,468 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:46,485 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:46,601 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:46,663 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:46,772 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:46,962 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:47,032 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:47,334 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:51,556 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_119| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)) (select .cse0 |ULTIMATE.start_main_~#x~0.offset|))) [2019-12-07 21:55:51,606 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:51,691 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:55:53,694 WARN L838 $PredicateComparison]: unable to prove that (and (<= 0 (+ c_ULTIMATE.start_main_~ret2~0 2147483648)) (= |c_ULTIMATE.start_rangesum_#res| c_ULTIMATE.start_main_~ret5~0) (<= 20 c_ULTIMATE.start_rangesum_~i~1) (<= c_ULTIMATE.start_main_~ret5~0 2147483647) (<= 0 (+ c_ULTIMATE.start_main_~ret5~0 2147483648)) (or (not (= c_ULTIMATE.start_main_~ret2~0 c_ULTIMATE.start_main_~ret~1)) (not (= c_ULTIMATE.start_main_~ret5~0 c_ULTIMATE.start_main_~ret~1))) (let ((.cse0 (= 0 c_ULTIMATE.start_rangesum_~cnt~0))) (or (and (not .cse0) (= |c_ULTIMATE.start_rangesum_#res| (let ((.cse1 (mod (let ((.cse2 (div c_ULTIMATE.start_rangesum_~ret~0 c_ULTIMATE.start_rangesum_~cnt~0))) (ite (and (not (= 0 (mod c_ULTIMATE.start_rangesum_~ret~0 c_ULTIMATE.start_rangesum_~cnt~0))) (< c_ULTIMATE.start_rangesum_~ret~0 0)) (ite (< c_ULTIMATE.start_rangesum_~cnt~0 0) (+ .cse2 (- 1)) (+ .cse2 1)) .cse2)) 4294967296))) (ite (<= .cse1 2147483647) .cse1 (+ .cse1 (- 4294967296)))))) (and (= |c_ULTIMATE.start_rangesum_#res| 0) .cse0))) (<= 0 c_ULTIMATE.start_rangesum_~cnt~0) (<= 0 c_ULTIMATE.start_rangesum_~i~1) (<= c_ULTIMATE.start_main_~ret2~0 2147483647) (<= 19 c_ULTIMATE.start_main_~i~2)) is different from false [2019-12-07 21:55:53,992 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 21:55:53,992 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:53,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:55:53,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-12-07 21:55:53,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61735555] [2019-12-07 21:55:53,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 21:55:53,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:55:53,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 21:55:53,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=116, Unknown=1, NotChecked=22, Total=182 [2019-12-07 21:55:53,993 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2019-12-07 21:55:54,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:55:54,006 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2019-12-07 21:55:54,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 21:55:54,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2019-12-07 21:55:54,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:55:54,007 INFO L225 Difference]: With dead ends: 63 [2019-12-07 21:55:54,007 INFO L226 Difference]: Without dead ends: 53 [2019-12-07 21:55:54,008 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=43, Invalid=116, Unknown=1, NotChecked=22, Total=182 [2019-12-07 21:55:54,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-12-07 21:55:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-12-07 21:55:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 21:55:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2019-12-07 21:55:54,011 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 48 [2019-12-07 21:55:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:55:54,011 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2019-12-07 21:55:54,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 21:55:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2019-12-07 21:55:54,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 21:55:54,012 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:55:54,012 INFO L410 BasicCegarLoop]: trace histogram [20, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:55:54,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:55:54,213 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:55:54,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:55:54,214 INFO L82 PathProgramCache]: Analyzing trace with hash 114507750, now seen corresponding path program 6 times [2019-12-07 21:55:54,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:55:54,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47206731] [2019-12-07 21:55:54,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:55:54,240 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:55:54,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800073236] [2019-12-07 21:55:54,240 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:55:54,291 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 21:55:54,291 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 21:55:54,292 INFO L264 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 21:55:54,294 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:55:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-12-07 21:55:54,319 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:55:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-12-07 21:55:54,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47206731] [2019-12-07 21:55:54,373 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:54,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800073236] [2019-12-07 21:55:54,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253434110] [2019-12-07 21:55:54,374 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 21:55:54,374 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:55:54,374 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:55:54,375 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:55:54,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:55:54,492 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:54,500 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:54,593 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:54,600 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:54,729 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:54,753 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:54,759 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:54,783 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:54,815 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:54,821 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:55,308 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:55,466 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:56,431 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:56,748 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:56,883 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:56,954 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:57,018 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:57,046 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:57,342 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:57,681 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:57,744 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:57,782 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:57,858 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:55:58,290 WARN L192 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 21:55:59,010 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:59,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:55:59,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-12-07 21:55:59,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893695225] [2019-12-07 21:55:59,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 21:55:59,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:55:59,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 21:55:59,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-12-07 21:55:59,011 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 16 states. [2019-12-07 21:55:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:55:59,106 INFO L93 Difference]: Finished difference Result 101 states and 131 transitions. [2019-12-07 21:55:59,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 21:55:59,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2019-12-07 21:55:59,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:55:59,108 INFO L225 Difference]: With dead ends: 101 [2019-12-07 21:55:59,108 INFO L226 Difference]: Without dead ends: 77 [2019-12-07 21:55:59,108 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-12-07 21:55:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-12-07 21:55:59,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-12-07 21:55:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-12-07 21:55:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2019-12-07 21:55:59,114 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 52 [2019-12-07 21:55:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:55:59,114 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2019-12-07 21:55:59,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 21:55:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2019-12-07 21:55:59,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-12-07 21:55:59,115 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:55:59,116 INFO L410 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:55:59,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:55:59,317 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:55:59,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:55:59,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1596935654, now seen corresponding path program 7 times [2019-12-07 21:55:59,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:55:59,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766626039] [2019-12-07 21:55:59,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:55:59,372 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:55:59,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540700004] [2019-12-07 21:55:59,372 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:55:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:55:59,439 INFO L264 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 21:55:59,441 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:55:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2019-12-07 21:55:59,525 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:55:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2019-12-07 21:55:59,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766626039] [2019-12-07 21:55:59,665 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:55:59,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540700004] [2019-12-07 21:55:59,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1295270732] [2019-12-07 21:55:59,666 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 21:55:59,666 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:55:59,666 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:55:59,667 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:55:59,667 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:55:59,816 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:55:59,852 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:00,115 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:00,886 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:00,957 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:00,966 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:00,974 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,008 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,084 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,093 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,101 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,162 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,175 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,220 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,227 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,264 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,291 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,298 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,323 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,354 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,362 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:01,368 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:03,589 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:03,747 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:06,780 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#x~0.offset| (+ |ULTIMATE.start_main_~#x~0.offset| 4)) [2019-12-07 21:56:09,272 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:09,586 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:09,714 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:11,734 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_149| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)) (select .cse0 |ULTIMATE.start_main_~#x~0.offset|))) [2019-12-07 21:56:15,471 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:15,610 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:15,698 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:15,739 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:15,792 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:15,897 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:15,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:16,161 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:56:18,440 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 21:56:21,999 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 21:56:22,000 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:56:22,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:56:22,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2019-12-07 21:56:22,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133612523] [2019-12-07 21:56:22,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 21:56:22,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:56:22,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 21:56:22,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2019-12-07 21:56:22,001 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 22 states. [2019-12-07 21:56:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:56:22,097 INFO L93 Difference]: Finished difference Result 135 states and 159 transitions. [2019-12-07 21:56:22,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-07 21:56:22,097 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 76 [2019-12-07 21:56:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:56:22,098 INFO L225 Difference]: With dead ends: 135 [2019-12-07 21:56:22,098 INFO L226 Difference]: Without dead ends: 95 [2019-12-07 21:56:22,098 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 190 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2019-12-07 21:56:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-12-07 21:56:22,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-12-07 21:56:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-12-07 21:56:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2019-12-07 21:56:22,104 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 76 [2019-12-07 21:56:22,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:56:22,104 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2019-12-07 21:56:22,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 21:56:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2019-12-07 21:56:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-12-07 21:56:22,105 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:56:22,105 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:56:22,306 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:56:22,307 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:56:22,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:56:22,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1377845146, now seen corresponding path program 8 times [2019-12-07 21:56:22,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:56:22,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767968353] [2019-12-07 21:56:22,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:56:22,332 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:56:22,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417867129] [2019-12-07 21:56:22,332 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:56:22,447 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 21:56:22,447 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 21:56:22,448 INFO L264 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 21:56:22,450 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:56:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-12-07 21:56:22,479 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:56:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-12-07 21:56:22,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767968353] [2019-12-07 21:56:22,534 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:56:22,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417867129] [2019-12-07 21:56:22,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [815100485] [2019-12-07 21:56:22,535 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 21:56:22,535 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:56:22,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:56:22,536 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:56:22,536 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:56:22,637 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:22,643 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:22,865 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#x~0.offset| 4) |ULTIMATE.start_rangesum_#in~x.offset|) [2019-12-07 21:56:22,928 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_162| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 21:56:22,990 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_162| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 21:56:23,052 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_162| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:23,114 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_162| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:23,211 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_162| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:23,275 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:23,338 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:23,401 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:23,464 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:23,548 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:23,553 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:23,559 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:23,564 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:24,075 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:29,725 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:29,808 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:29,828 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:34,017 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:34,139 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:34,161 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:34,274 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:34,623 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:35,589 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:35,609 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:35,668 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:56:36,056 WARN L192 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 21:56:36,656 WARN L192 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 21:56:36,656 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:56:36,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:56:36,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-12-07 21:56:36,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513069930] [2019-12-07 21:56:36,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 21:56:36,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:56:36,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 21:56:36,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-12-07 21:56:36,657 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2019-12-07 21:56:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:56:36,675 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2019-12-07 21:56:36,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 21:56:36,676 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 94 [2019-12-07 21:56:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:56:36,676 INFO L225 Difference]: With dead ends: 127 [2019-12-07 21:56:36,676 INFO L226 Difference]: Without dead ends: 103 [2019-12-07 21:56:36,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-12-07 21:56:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-12-07 21:56:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-12-07 21:56:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-12-07 21:56:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2019-12-07 21:56:36,682 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 94 [2019-12-07 21:56:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:56:36,682 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2019-12-07 21:56:36,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 21:56:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2019-12-07 21:56:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-12-07 21:56:36,683 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:56:36,683 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:56:36,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:56:36,884 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:56:36,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:56:36,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1329783910, now seen corresponding path program 9 times [2019-12-07 21:56:36,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:56:36,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855164774] [2019-12-07 21:56:36,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:56:36,920 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:56:36,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533810384] [2019-12-07 21:56:36,920 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:56:37,001 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 21:56:37,001 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 21:56:37,003 INFO L264 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 21:56:37,005 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:56:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-12-07 21:56:37,089 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:56:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-12-07 21:56:37,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855164774] [2019-12-07 21:56:37,212 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:56:37,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533810384] [2019-12-07 21:56:37,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [681254175] [2019-12-07 21:56:37,213 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 21:56:37,213 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:56:37,213 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:56:37,213 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:56:37,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:56:37,309 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:37,378 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:37,384 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:37,406 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:37,614 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#x~0.offset| 4) |ULTIMATE.start_rangesum_#in~x.offset|) [2019-12-07 21:56:37,678 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_184| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 21:56:37,742 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_184| |ULTIMATE.start_main_~#x~0.base|))) (= (select .cse0 |ULTIMATE.start_main_~#x~0.offset|) (select .cse0 (+ |ULTIMATE.start_main_~#x~0.offset| 4)))) [2019-12-07 21:56:37,805 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_184| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:37,868 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_184| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:37,967 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_184| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:38,032 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:38,096 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 4)) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:38,160 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:38,223 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) |ULTIMATE.start_main_~#x~0.offset|) ULTIMATE.start_main_~temp~0) [2019-12-07 21:56:38,252 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:38,258 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:38,263 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:38,283 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:38,396 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:38,563 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:38,766 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:38,827 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:38,988 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:40,667 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:40,861 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:44,382 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:46,667 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:46,733 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:49,076 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:49,205 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 21:56:51,322 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:56:51,680 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-12-07 21:56:52,113 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-12-07 21:56:52,114 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:56:52,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:56:52,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2019-12-07 21:56:52,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120081329] [2019-12-07 21:56:52,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-07 21:56:52,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:56:52,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 21:56:52,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=474, Unknown=0, NotChecked=0, Total=702 [2019-12-07 21:56:52,115 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 21 states. [2019-12-07 21:56:52,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:56:52,136 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2019-12-07 21:56:52,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-07 21:56:52,136 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 102 [2019-12-07 21:56:52,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:56:52,137 INFO L225 Difference]: With dead ends: 132 [2019-12-07 21:56:52,137 INFO L226 Difference]: Without dead ends: 108 [2019-12-07 21:56:52,138 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 268 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=474, Unknown=0, NotChecked=0, Total=702 [2019-12-07 21:56:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-12-07 21:56:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2019-12-07 21:56:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-12-07 21:56:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2019-12-07 21:56:52,142 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 102 [2019-12-07 21:56:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:56:52,142 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2019-12-07 21:56:52,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-07 21:56:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2019-12-07 21:56:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-12-07 21:56:52,143 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:56:52,143 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:56:52,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:56:52,345 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:56:52,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:56:52,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1799595090, now seen corresponding path program 10 times [2019-12-07 21:56:52,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:56:52,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799312470] [2019-12-07 21:56:52,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:56:52,363 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 21:56:52,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155847797] [2019-12-07 21:56:52,364 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:56:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:56:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:56:57,839 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 21:56:57,840 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:56:58,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:56:58,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:56:58 BoogieIcfgContainer [2019-12-07 21:56:58,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:56:58,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:56:58,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:56:58,142 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:56:58,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:54:34" (3/4) ... [2019-12-07 21:56:58,144 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 21:56:58,204 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d50f36c0-9e9e-4e3c-b5f1-8930202f9254/bin/utaipan/witness.graphml [2019-12-07 21:56:58,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:56:58,205 INFO L168 Benchmark]: Toolchain (without parser) took 144753.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 945.1 MB in the beginning and 940.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 129.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:56:58,205 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:56:58,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 21:56:58,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.39 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 21:56:58,206 INFO L168 Benchmark]: Boogie Preprocessor took 20.34 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:56:58,206 INFO L168 Benchmark]: RCFGBuilder took 577.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:56:58,206 INFO L168 Benchmark]: TraceAbstraction took 143869.42 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 28.3 MB). Free memory was 1.0 GB in the beginning and 955.3 MB in the end (delta: 85.6 MB). Peak memory consumption was 114.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:56:58,206 INFO L168 Benchmark]: Witness Printer took 62.23 ms. Allocated memory is still 1.2 GB. Free memory was 955.3 MB in the beginning and 940.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2019-12-07 21:56:58,207 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 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.39 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 20.34 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 577.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 143869.42 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 28.3 MB). Free memory was 1.0 GB in the beginning and 955.3 MB in the end (delta: 85.6 MB). Peak memory consumption was 114.0 MB. Max. memory is 11.5 GB. * Witness Printer took 62.23 ms. Allocated memory is still 1.2 GB. Free memory was 955.3 MB in the beginning and 940.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[20]; [L5] int i; [L6] i = 0 [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 20 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND FALSE !(i < 20) [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 20) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 20) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<20 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND FALSE !(i<20 -1) [L46] x[20 -1] = temp [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND FALSE !(i > 20/2) [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 20 [L18] COND TRUE i > 20/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 20) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 143.7s, OverallIterations: 13, TraceHistogramMax: 20, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 0 SDslu, 247 SDs, 0 SdLazy, 274 SolverSat, 316 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1465 GetRequests, 1270 SyntacticMatches, 23 SemanticMatches, 172 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 23.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=12, 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, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 618 NumberOfCodeBlocks, 530 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 991 ConstructedInterpolants, 0 QuantifiedInterpolants, 82895 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2527 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 5682/6330 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 incorrect! Received shutdown request...