./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum40.i -s /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5aa88e6a16bc32acbf4415003d72a614ada16cc ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2020-12-09 19:29:18,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:29:18,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:29:18,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:29:18,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:29:18,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:29:18,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:29:18,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:29:18,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:29:18,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:29:18,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:29:18,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:29:18,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:29:18,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:29:18,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:29:18,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:29:18,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:29:18,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:29:18,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:29:18,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:29:18,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:29:18,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:29:18,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:29:18,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:29:18,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:29:18,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:29:18,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:29:18,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:29:18,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:29:18,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:29:18,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:29:18,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:29:18,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:29:18,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:29:18,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:29:18,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:29:18,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:29:18,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:29:18,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:29:18,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:29:18,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:29:18,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:29:18,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:29:18,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:29:18,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:29:18,477 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:29:18,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:29:18,478 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:29:18,478 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:29:18,478 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:29:18,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:29:18,478 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:29:18,478 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:29:18,478 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:29:18,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:29:18,479 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:29:18,479 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:29:18,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:29:18,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:29:18,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:29:18,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:29:18,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:29:18,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:29:18,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:29:18,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:29:18,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:29:18,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:29:18,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:29:18,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:29:18,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:29:18,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:29:18,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:29:18,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:29:18,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:29:18,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:29:18,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:29:18,482 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:29:18,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:29:18,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:29:18,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:29:18,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:29:18,482 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5aa88e6a16bc32acbf4415003d72a614ada16cc [2020-12-09 19:29:18,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:29:18,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:29:18,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:29:18,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:29:18,683 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:29:18,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum40.i [2020-12-09 19:29:18,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/data/0255e7ded/b9e0e5979cc24ae3a5ad98f4584a02db/FLAGd52333a18 [2020-12-09 19:29:19,080 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:29:19,080 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/sv-benchmarks/c/reducercommutativity/rangesum40.i [2020-12-09 19:29:19,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/data/0255e7ded/b9e0e5979cc24ae3a5ad98f4584a02db/FLAGd52333a18 [2020-12-09 19:29:19,530 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/data/0255e7ded/b9e0e5979cc24ae3a5ad98f4584a02db [2020-12-09 19:29:19,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:29:19,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:29:19,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:29:19,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:29:19,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:29:19,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446c380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19, skipping insertion in model container [2020-12-09 19:29:19,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:29:19,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:29:19,670 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2020-12-09 19:29:19,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:29:19,679 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:29:19,697 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2020-12-09 19:29:19,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:29:19,707 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:29:19,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19 WrapperNode [2020-12-09 19:29:19,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:29:19,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:29:19,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:29:19,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:29:19,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:29:19,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:29:19,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:29:19,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:29:19,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... [2020-12-09 19:29:19,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:29:19,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:29:19,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:29:19,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:29:19,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:29:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:29:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 19:29:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:29:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:29:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 19:29:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:29:20,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:29:20,232 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 19:29:20,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:29:20 BoogieIcfgContainer [2020-12-09 19:29:20,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:29:20,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:29:20,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:29:20,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:29:20,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:29:19" (1/3) ... [2020-12-09 19:29:20,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c2cacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:29:20, skipping insertion in model container [2020-12-09 19:29:20,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:19" (2/3) ... [2020-12-09 19:29:20,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c2cacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:29:20, skipping insertion in model container [2020-12-09 19:29:20,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:29:20" (3/3) ... [2020-12-09 19:29:20,243 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2020-12-09 19:29:20,256 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:29:20,260 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:29:20,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:29:20,293 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:29:20,294 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:29:20,294 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:29:20,294 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:29:20,294 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:29:20,294 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:29:20,294 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:29:20,294 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:29:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 19:29:20,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:29:20,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:20,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:20,320 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:20,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:20,327 INFO L82 PathProgramCache]: Analyzing trace with hash -964703457, now seen corresponding path program 1 times [2020-12-09 19:29:20,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:20,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136375793] [2020-12-09 19:29:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:29:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:29:20,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136375793] [2020-12-09 19:29:20,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:29:20,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:29:20,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884963016] [2020-12-09 19:29:20,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:29:20,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:20,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:29:20,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:29:20,498 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-12-09 19:29:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:20,517 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2020-12-09 19:29:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:29:20,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 19:29:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:20,525 INFO L225 Difference]: With dead ends: 21 [2020-12-09 19:29:20,525 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 19:29:20,527 INFO L677 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 [2020-12-09 19:29:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 19:29:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 19:29:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 19:29:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2020-12-09 19:29:20,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2020-12-09 19:29:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:20,549 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-12-09 19:29:20,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:29:20,549 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2020-12-09 19:29:20,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 19:29:20,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:20,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:20,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:29:20,550 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:20,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:20,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2050331539, now seen corresponding path program 1 times [2020-12-09 19:29:20,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:20,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180799158] [2020-12-09 19:29:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:20,566 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:20,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769140782] [2020-12-09 19:29:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:29:20,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 19:29:20,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 19:29:20,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 19:29:20,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180799158] [2020-12-09 19:29:20,651 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:20,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769140782] [2020-12-09 19:29:20,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:29:20,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 19:29:20,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550493926] [2020-12-09 19:29:20,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:29:20,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:20,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:29:20,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:29:20,654 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2020-12-09 19:29:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:20,688 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2020-12-09 19:29:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:29:20,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 19:29:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:20,689 INFO L225 Difference]: With dead ends: 22 [2020-12-09 19:29:20,689 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 19:29:20,690 INFO L677 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 [2020-12-09 19:29:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 19:29:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 19:29:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 19:29:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-12-09 19:29:20,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2020-12-09 19:29:20,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:20,694 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-12-09 19:29:20,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:29:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-12-09 19:29:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 19:29:20,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:20,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:20,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 19:29:20,897 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:20,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:20,898 INFO L82 PathProgramCache]: Analyzing trace with hash -939408813, now seen corresponding path program 1 times [2020-12-09 19:29:20,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:20,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106126839] [2020-12-09 19:29:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:20,941 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:20,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445038659] [2020-12-09 19:29:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:29:21,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 19:29:21,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 19:29:21,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 19:29:21,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106126839] [2020-12-09 19:29:21,164 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:21,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445038659] [2020-12-09 19:29:21,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:29:21,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 19:29:21,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674627021] [2020-12-09 19:29:21,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:29:21,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:21,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:29:21,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:29:21,167 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2020-12-09 19:29:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:21,187 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2020-12-09 19:29:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:29:21,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 19:29:21,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:21,188 INFO L225 Difference]: With dead ends: 24 [2020-12-09 19:29:21,188 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 19:29:21,189 INFO L677 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 [2020-12-09 19:29:21,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 19:29:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 19:29:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 19:29:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-12-09 19:29:21,194 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2020-12-09 19:29:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:21,194 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-12-09 19:29:21,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:29:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-12-09 19:29:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 19:29:21,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:21,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:21,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:29:21,396 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1226876461, now seen corresponding path program 1 times [2020-12-09 19:29:21,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:21,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137319215] [2020-12-09 19:29:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:21,468 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:21,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471189338] [2020-12-09 19:29:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:29:21,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 19:29:21,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 19:29:21,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 19:29:21,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137319215] [2020-12-09 19:29:21,605 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:21,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471189338] [2020-12-09 19:29:21,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [359569711] [2020-12-09 19:29:21,620 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:21,620 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:21,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:21,628 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:21,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:23,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:23,162 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:23,219 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:23,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:23,619 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:23,638 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:23,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:23,795 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:23,904 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,419 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,517 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,525 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,543 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,588 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,599 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,734 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:24,830 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:26,918 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:27,099 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:27,413 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-09 19:29:27,539 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:27,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:27,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-12-09 19:29:27,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736335943] [2020-12-09 19:29:27,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:29:27,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:27,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:29:27,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-09 19:29:27,541 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2020-12-09 19:29:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:27,552 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-12-09 19:29:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:29:27,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-09 19:29:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:27,553 INFO L225 Difference]: With dead ends: 36 [2020-12-09 19:29:27,553 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 19:29:27,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-09 19:29:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 19:29:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 19:29:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 19:29:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-12-09 19:29:27,557 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2020-12-09 19:29:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:27,557 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-12-09 19:29:27,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:29:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-12-09 19:29:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 19:29:27,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:27,558 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:27,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:29:27,760 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:27,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:27,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2012560801, now seen corresponding path program 2 times [2020-12-09 19:29:27,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:27,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680110700] [2020-12-09 19:29:27,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:27,805 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:27,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166449644] [2020-12-09 19:29:27,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:27,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 19:29:27,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:29:27,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 19:29:27,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 19:29:27,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 19:29:27,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680110700] [2020-12-09 19:29:27,907 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:27,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166449644] [2020-12-09 19:29:27,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2125491655] [2020-12-09 19:29:27,910 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:27,910 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:27,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:27,911 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:27,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:28,663 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:28,775 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:28,819 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:28,961 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:29,244 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:29,498 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:29,658 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:29,686 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:29,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:29,769 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:29,929 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:29,963 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:29,970 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:32,073 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:32,142 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:32,148 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:32,154 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:32,188 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:32,316 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:32,740 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:32,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:32,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-09 19:29:32,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910333612] [2020-12-09 19:29:32,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 19:29:32,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 19:29:32,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-09 19:29:32,741 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2020-12-09 19:29:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:32,799 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-12-09 19:29:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 19:29:32,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-09 19:29:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:32,800 INFO L225 Difference]: With dead ends: 45 [2020-12-09 19:29:32,800 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 19:29:32,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-09 19:29:32,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 19:29:32,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 19:29:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 19:29:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-09 19:29:32,804 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-12-09 19:29:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:32,804 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-09 19:29:32,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 19:29:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-09 19:29:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 19:29:32,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:32,805 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:33,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:29:33,006 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:33,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:33,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1378594271, now seen corresponding path program 3 times [2020-12-09 19:29:33,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:33,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880297757] [2020-12-09 19:29:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:33,050 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:33,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572981066] [2020-12-09 19:29:33,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:33,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 19:29:33,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:29:33,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 19:29:33,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-09 19:29:33,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-09 19:29:33,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880297757] [2020-12-09 19:29:33,190 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:33,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572981066] [2020-12-09 19:29:33,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601972280] [2020-12-09 19:29:33,192 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:33,192 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:33,192 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:33,193 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:33,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:34,079 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,103 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,216 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,242 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,279 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,365 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,380 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,386 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,467 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,609 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,615 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:34,734 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:35,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:35,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:35,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 19:29:35,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9064393] [2020-12-09 19:29:35,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 19:29:35,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:35,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 19:29:35,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-09 19:29:35,163 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2020-12-09 19:29:35,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:35,180 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-12-09 19:29:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 19:29:35,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-12-09 19:29:35,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:35,181 INFO L225 Difference]: With dead ends: 66 [2020-12-09 19:29:35,181 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 19:29:35,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-09 19:29:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 19:29:35,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-09 19:29:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 19:29:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-12-09 19:29:35,185 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 32 [2020-12-09 19:29:35,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:35,186 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-12-09 19:29:35,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 19:29:35,186 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-12-09 19:29:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-09 19:29:35,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:35,187 INFO L422 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:35,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:29:35,389 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:35,390 INFO L82 PathProgramCache]: Analyzing trace with hash -254314145, now seen corresponding path program 4 times [2020-12-09 19:29:35,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:35,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590557439] [2020-12-09 19:29:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:35,411 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:35,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208367326] [2020-12-09 19:29:35,411 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:29:35,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 19:29:35,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-09 19:29:35,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-09 19:29:35,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590557439] [2020-12-09 19:29:35,717 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:35,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208367326] [2020-12-09 19:29:35,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [27760280] [2020-12-09 19:29:35,718 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:35,718 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:35,718 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:35,719 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:35,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:36,589 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,618 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,672 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,678 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,830 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,845 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,852 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,881 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,889 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:36,931 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:37,126 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:37,280 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:37,598 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-09 19:29:37,754 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:37,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:37,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2020-12-09 19:29:37,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131649537] [2020-12-09 19:29:37,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-09 19:29:37,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:37,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-09 19:29:37,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=576, Unknown=0, NotChecked=0, Total=870 [2020-12-09 19:29:37,756 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 24 states. [2020-12-09 19:29:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:37,789 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-12-09 19:29:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-09 19:29:37,790 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 38 [2020-12-09 19:29:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:37,790 INFO L225 Difference]: With dead ends: 78 [2020-12-09 19:29:37,790 INFO L226 Difference]: Without dead ends: 51 [2020-12-09 19:29:37,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=294, Invalid=576, Unknown=0, NotChecked=0, Total=870 [2020-12-09 19:29:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-09 19:29:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-12-09 19:29:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-09 19:29:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-12-09 19:29:37,795 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 38 [2020-12-09 19:29:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:37,795 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-12-09 19:29:37,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-09 19:29:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-12-09 19:29:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-09 19:29:37,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:37,796 INFO L422 BasicCegarLoop]: trace histogram [22, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:37,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:29:37,998 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:37,999 INFO L82 PathProgramCache]: Analyzing trace with hash -986501025, now seen corresponding path program 5 times [2020-12-09 19:29:38,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:38,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605858228] [2020-12-09 19:29:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:38,036 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:38,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8436867] [2020-12-09 19:29:38,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:38,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 19:29:38,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:29:38,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 19:29:38,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2020-12-09 19:29:38,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2020-12-09 19:29:38,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605858228] [2020-12-09 19:29:38,151 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:38,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8436867] [2020-12-09 19:29:38,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920678074] [2020-12-09 19:29:38,153 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:38,153 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:38,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:38,153 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:38,153 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:38,659 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:38,916 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:38,960 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,075 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,084 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,132 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,366 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,428 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,646 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,659 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:39,664 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:41,767 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:41,777 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:41,783 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:41,870 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:41,904 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:42,002 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:42,391 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:42,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:42,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-09 19:29:42,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634288350] [2020-12-09 19:29:42,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 19:29:42,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:42,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 19:29:42,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-09 19:29:42,392 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-12-09 19:29:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:42,407 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2020-12-09 19:29:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 19:29:42,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-12-09 19:29:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:42,408 INFO L225 Difference]: With dead ends: 65 [2020-12-09 19:29:42,408 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 19:29:42,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-09 19:29:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 19:29:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-09 19:29:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 19:29:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-12-09 19:29:42,412 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 50 [2020-12-09 19:29:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:42,412 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-12-09 19:29:42,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 19:29:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-12-09 19:29:42,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-09 19:29:42,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:42,413 INFO L422 BasicCegarLoop]: trace histogram [22, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:42,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:29:42,615 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:42,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:42,616 INFO L82 PathProgramCache]: Analyzing trace with hash -828704417, now seen corresponding path program 6 times [2020-12-09 19:29:42,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:42,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539460801] [2020-12-09 19:29:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:42,668 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:42,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947449002] [2020-12-09 19:29:42,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:42,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 19:29:42,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:29:42,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 19:29:42,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-09 19:29:42,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-09 19:29:43,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539460801] [2020-12-09 19:29:43,400 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:43,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947449002] [2020-12-09 19:29:43,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1889624461] [2020-12-09 19:29:43,401 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:43,401 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:43,401 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:43,401 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:43,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:43,816 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:43,893 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,017 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,082 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,088 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,180 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,185 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,325 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,385 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,391 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,433 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,456 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,540 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:44,662 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:45,184 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:45,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:45,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 41 [2020-12-09 19:29:45,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857663492] [2020-12-09 19:29:45,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-12-09 19:29:45,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:45,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-12-09 19:29:45,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=879, Invalid=1377, Unknown=0, NotChecked=0, Total=2256 [2020-12-09 19:29:45,187 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 42 states. [2020-12-09 19:29:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:45,250 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2020-12-09 19:29:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-09 19:29:45,251 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 54 [2020-12-09 19:29:45,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:45,252 INFO L225 Difference]: With dead ends: 104 [2020-12-09 19:29:45,252 INFO L226 Difference]: Without dead ends: 73 [2020-12-09 19:29:45,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=879, Invalid=1377, Unknown=0, NotChecked=0, Total=2256 [2020-12-09 19:29:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-09 19:29:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-12-09 19:29:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-09 19:29:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-12-09 19:29:45,260 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 54 [2020-12-09 19:29:45,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:45,260 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-12-09 19:29:45,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-12-09 19:29:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-12-09 19:29:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-09 19:29:45,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:45,262 INFO L422 BasicCegarLoop]: trace histogram [40, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:45,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:29:45,464 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:45,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:45,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2063703007, now seen corresponding path program 7 times [2020-12-09 19:29:45,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:45,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831447890] [2020-12-09 19:29:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:45,523 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:45,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057556579] [2020-12-09 19:29:45,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:29:45,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 19:29:45,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2020-12-09 19:29:45,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2020-12-09 19:29:45,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831447890] [2020-12-09 19:29:45,764 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:45,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057556579] [2020-12-09 19:29:45,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [966203136] [2020-12-09 19:29:45,766 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:45,766 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:45,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:45,766 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:45,766 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:46,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,515 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,534 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,601 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,647 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,709 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,754 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,817 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,823 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,842 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:46,961 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:47,278 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-09 19:29:47,431 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:47,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:47,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-09 19:29:47,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397066553] [2020-12-09 19:29:47,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-09 19:29:47,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:47,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-09 19:29:47,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-09 19:29:47,433 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 16 states. [2020-12-09 19:29:47,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:47,558 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2020-12-09 19:29:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 19:29:47,559 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2020-12-09 19:29:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:47,560 INFO L225 Difference]: With dead ends: 121 [2020-12-09 19:29:47,560 INFO L226 Difference]: Without dead ends: 97 [2020-12-09 19:29:47,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-09 19:29:47,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-09 19:29:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-12-09 19:29:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-09 19:29:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-12-09 19:29:47,566 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 72 [2020-12-09 19:29:47,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:47,566 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-12-09 19:29:47,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-09 19:29:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-12-09 19:29:47,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-09 19:29:47,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:47,567 INFO L422 BasicCegarLoop]: trace histogram [40, 14, 14, 14, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:47,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:29:47,768 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:47,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:47,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1141148961, now seen corresponding path program 8 times [2020-12-09 19:29:47,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:47,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525085296] [2020-12-09 19:29:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:47,817 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:47,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840587875] [2020-12-09 19:29:47,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:48,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-09 19:29:48,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:29:48,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 19:29:48,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2020-12-09 19:29:48,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2020-12-09 19:29:48,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525085296] [2020-12-09 19:29:48,325 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:48,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840587875] [2020-12-09 19:29:48,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [614842691] [2020-12-09 19:29:48,327 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:48,327 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:48,327 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:48,327 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:48,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:48,868 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:48,878 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:48,936 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:48,954 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:49,035 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:49,057 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:49,078 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:49,156 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:49,251 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:49,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:49,364 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:49,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:49,545 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:50,004 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:50,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:50,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-09 19:29:50,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855685219] [2020-12-09 19:29:50,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-09 19:29:50,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:50,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-09 19:29:50,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-09 19:29:50,005 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-12-09 19:29:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:50,035 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-12-09 19:29:50,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 19:29:50,036 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 96 [2020-12-09 19:29:50,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:50,036 INFO L225 Difference]: With dead ends: 123 [2020-12-09 19:29:50,037 INFO L226 Difference]: Without dead ends: 105 [2020-12-09 19:29:50,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-09 19:29:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-09 19:29:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-12-09 19:29:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-09 19:29:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-12-09 19:29:50,043 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 96 [2020-12-09 19:29:50,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:50,043 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-12-09 19:29:50,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-09 19:29:50,043 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-12-09 19:29:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-09 19:29:50,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:50,044 INFO L422 BasicCegarLoop]: trace histogram [40, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:50,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable421 [2020-12-09 19:29:50,245 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:50,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1025669921, now seen corresponding path program 9 times [2020-12-09 19:29:50,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:50,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835738910] [2020-12-09 19:29:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:50,299 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:50,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98963095] [2020-12-09 19:29:50,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:50,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 19:29:50,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:29:50,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 19:29:50,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2020-12-09 19:29:50,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2020-12-09 19:29:50,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835738910] [2020-12-09 19:29:50,883 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:50,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98963095] [2020-12-09 19:29:50,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [927536426] [2020-12-09 19:29:50,884 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:50,884 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:50,885 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:50,885 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:50,885 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:51,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:51,495 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:51,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:51,664 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:51,852 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:51,944 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,254 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,297 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,321 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,407 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,419 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,447 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,453 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,555 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,810 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:52,992 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:53,133 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-09 19:29:53,344 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-09 19:29:53,545 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:53,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:53,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2020-12-09 19:29:53,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031749712] [2020-12-09 19:29:53,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-09 19:29:53,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:53,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-09 19:29:53,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=892, Unknown=0, NotChecked=0, Total=1406 [2020-12-09 19:29:53,546 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 32 states. [2020-12-09 19:29:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:53,839 INFO L93 Difference]: Finished difference Result 201 states and 255 transitions. [2020-12-09 19:29:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-09 19:29:53,840 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 104 [2020-12-09 19:29:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:53,841 INFO L225 Difference]: With dead ends: 201 [2020-12-09 19:29:53,841 INFO L226 Difference]: Without dead ends: 153 [2020-12-09 19:29:53,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=514, Invalid=892, Unknown=0, NotChecked=0, Total=1406 [2020-12-09 19:29:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-09 19:29:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-12-09 19:29:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-09 19:29:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2020-12-09 19:29:53,849 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 104 [2020-12-09 19:29:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:53,849 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2020-12-09 19:29:53,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-09 19:29:53,849 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2020-12-09 19:29:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-09 19:29:53,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:53,851 INFO L422 BasicCegarLoop]: trace histogram [40, 30, 30, 30, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:54,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:29:54,052 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:54,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1423101217, now seen corresponding path program 10 times [2020-12-09 19:29:54,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:54,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317612355] [2020-12-09 19:29:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:54,076 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:54,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426360243] [2020-12-09 19:29:54,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/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 [2020-12-09 19:29:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:29:54,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-09 19:29:54,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:29:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-12-09 19:29:54,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:29:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-12-09 19:29:55,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317612355] [2020-12-09 19:29:55,097 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:55,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426360243] [2020-12-09 19:29:55,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [993115612] [2020-12-09 19:29:55,099 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:29:55,099 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:29:55,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:29:55,099 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:29:55,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:29:55,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:55,743 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:55,750 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:55,757 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:55,854 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:55,876 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:55,881 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:56,020 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:56,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:56,248 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:56,255 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:56,285 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:56,313 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:56,353 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:56,369 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:58,495 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:29:58,648 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:29:59,253 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:29:59,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:29:59,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 42 [2020-12-09 19:29:59,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728682945] [2020-12-09 19:29:59,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-12-09 19:29:59,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:29:59,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-12-09 19:29:59,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=879, Invalid=1377, Unknown=0, NotChecked=0, Total=2256 [2020-12-09 19:29:59,255 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand 42 states. [2020-12-09 19:29:59,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:29:59,535 INFO L93 Difference]: Finished difference Result 263 states and 299 transitions. [2020-12-09 19:29:59,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-09 19:29:59,536 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 152 [2020-12-09 19:29:59,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:29:59,537 INFO L225 Difference]: With dead ends: 263 [2020-12-09 19:29:59,537 INFO L226 Difference]: Without dead ends: 183 [2020-12-09 19:29:59,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 407 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=879, Invalid=1377, Unknown=0, NotChecked=0, Total=2256 [2020-12-09 19:29:59,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-12-09 19:29:59,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-12-09 19:29:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-12-09 19:29:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2020-12-09 19:29:59,544 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 152 [2020-12-09 19:29:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:29:59,545 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2020-12-09 19:29:59,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-12-09 19:29:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2020-12-09 19:29:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-09 19:29:59,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:29:59,546 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:29:59,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable542 [2020-12-09 19:29:59,747 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:29:59,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:29:59,749 INFO L82 PathProgramCache]: Analyzing trace with hash 168683423, now seen corresponding path program 11 times [2020-12-09 19:29:59,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:29:59,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168597421] [2020-12-09 19:29:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:29:59,803 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:29:59,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926634023] [2020-12-09 19:29:59,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:30:02,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-12-09 19:30:02,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:30:02,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 19:30:02,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:30:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-12-09 19:30:02,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:30:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-12-09 19:30:02,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168597421] [2020-12-09 19:30:02,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:30:02,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926634023] [2020-12-09 19:30:02,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1703905958] [2020-12-09 19:30:02,958 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:30:02,958 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:30:02,958 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:30:02,958 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:30:02,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:30:03,540 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:03,629 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:03,661 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:03,712 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:03,840 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:04,027 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:04,047 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:04,108 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:04,114 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:04,135 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:04,140 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:04,172 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:04,278 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:30:04,437 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-09 19:30:04,835 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:30:04,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:30:04,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2020-12-09 19:30:04,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536550307] [2020-12-09 19:30:04,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-09 19:30:04,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:30:04,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-09 19:30:04,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=892, Unknown=0, NotChecked=0, Total=1406 [2020-12-09 19:30:04,837 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand 32 states. [2020-12-09 19:30:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:30:04,879 INFO L93 Difference]: Finished difference Result 243 states and 263 transitions. [2020-12-09 19:30:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-09 19:30:04,879 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 182 [2020-12-09 19:30:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:30:04,880 INFO L225 Difference]: With dead ends: 243 [2020-12-09 19:30:04,880 INFO L226 Difference]: Without dead ends: 199 [2020-12-09 19:30:04,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=514, Invalid=892, Unknown=0, NotChecked=0, Total=1406 [2020-12-09 19:30:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-12-09 19:30:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-12-09 19:30:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-09 19:30:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 203 transitions. [2020-12-09 19:30:04,886 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 203 transitions. Word has length 182 [2020-12-09 19:30:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:30:04,887 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 203 transitions. [2020-12-09 19:30:04,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-09 19:30:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 203 transitions. [2020-12-09 19:30:04,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-12-09 19:30:04,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:30:04,888 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:30:05,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable601 [2020-12-09 19:30:05,090 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:30:05,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:30:05,091 INFO L82 PathProgramCache]: Analyzing trace with hash 501500831, now seen corresponding path program 12 times [2020-12-09 19:30:05,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:30:05,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670423301] [2020-12-09 19:30:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:30:05,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:30:05,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39017792] [2020-12-09 19:30:05,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:30:05,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 19:30:05,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:30:05,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-09 19:30:05,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:30:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3745 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-12-09 19:30:05,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:30:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3745 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-12-09 19:30:06,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670423301] [2020-12-09 19:30:06,131 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:30:06,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39017792] [2020-12-09 19:30:06,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [774029715] [2020-12-09 19:30:06,132 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 19:30:06,132 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:30:06,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:30:06,132 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:30:06,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:30:06,676 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:06,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:06,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:10,944 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:10,966 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:11,106 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:11,216 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:11,227 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:11,240 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:11,252 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:11,258 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:11,264 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:30:11,394 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:30:11,565 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-09 19:30:12,040 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:30:12,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:30:12,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 41 [2020-12-09 19:30:12,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071862869] [2020-12-09 19:30:12,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-09 19:30:12,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:30:12,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-09 19:30:12,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=838, Invalid=1324, Unknown=0, NotChecked=0, Total=2162 [2020-12-09 19:30:12,042 INFO L87 Difference]: Start difference. First operand 199 states and 203 transitions. Second operand 41 states. [2020-12-09 19:30:12,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:30:12,095 INFO L93 Difference]: Finished difference Result 252 states and 265 transitions. [2020-12-09 19:30:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-09 19:30:12,096 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 198 [2020-12-09 19:30:12,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:30:12,097 INFO L225 Difference]: With dead ends: 252 [2020-12-09 19:30:12,097 INFO L226 Difference]: Without dead ends: 208 [2020-12-09 19:30:12,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 546 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=838, Invalid=1324, Unknown=0, NotChecked=0, Total=2162 [2020-12-09 19:30:12,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-09 19:30:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2020-12-09 19:30:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-12-09 19:30:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 212 transitions. [2020-12-09 19:30:12,103 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 212 transitions. Word has length 198 [2020-12-09 19:30:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:30:12,104 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 212 transitions. [2020-12-09 19:30:12,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-12-09 19:30:12,104 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 212 transitions. [2020-12-09 19:30:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-12-09 19:30:12,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:30:12,105 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:30:12,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable664,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:30:12,306 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:30:12,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:30:12,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1792595843, now seen corresponding path program 13 times [2020-12-09 19:30:12,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:30:12,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386792218] [2020-12-09 19:30:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:30:12,364 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:30:12,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946373379] [2020-12-09 19:30:12,364 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:34:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:34:10,896 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:39:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:39:30,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:39:34,880 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:39:34,880 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:39:35,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable725,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:39:35,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:39:35 BoogieIcfgContainer [2020-12-09 19:39:35,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:39:35,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:39:35,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:39:35,244 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:39:35,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:29:20" (3/4) ... [2020-12-09 19:39:35,246 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 19:39:35,357 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_28c1d1d6-4374-406b-b616-8d69f50f4074/bin/utaipan/witness.graphml [2020-12-09 19:39:35,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:39:35,358 INFO L168 Benchmark]: Toolchain (without parser) took 615821.27 ms. Allocated memory was 127.9 MB in the beginning and 272.6 MB in the end (delta: 144.7 MB). Free memory was 91.9 MB in the beginning and 217.8 MB in the end (delta: -126.0 MB). Peak memory consumption was 158.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:39:35,358 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 99.6 MB in the end (delta: 24.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:39:35,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.28 ms. Allocated memory is still 127.9 MB. Free memory was 91.7 MB in the beginning and 102.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:39:35,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.35 ms. Allocated memory is still 127.9 MB. Free memory was 102.6 MB in the beginning and 100.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:39:35,359 INFO L168 Benchmark]: Boogie Preprocessor took 20.70 ms. Allocated memory is still 127.9 MB. Free memory was 100.6 MB in the beginning and 99.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:39:35,359 INFO L168 Benchmark]: RCFGBuilder took 477.30 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 60.6 MB in the end (delta: 38.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:39:35,359 INFO L168 Benchmark]: TraceAbstraction took 615006.71 ms. Allocated memory was 127.9 MB in the beginning and 272.6 MB in the end (delta: 144.7 MB). Free memory was 60.0 MB in the beginning and 83.1 MB in the end (delta: -23.1 MB). Peak memory consumption was 123.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:39:35,359 INFO L168 Benchmark]: Witness Printer took 113.85 ms. Allocated memory is still 272.6 MB. Free memory was 83.1 MB in the beginning and 217.8 MB in the end (delta: -134.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:39:35,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 99.6 MB in the end (delta: 24.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 170.28 ms. Allocated memory is still 127.9 MB. Free memory was 91.7 MB in the beginning and 102.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.35 ms. Allocated memory is still 127.9 MB. Free memory was 102.6 MB in the beginning and 100.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.70 ms. Allocated memory is still 127.9 MB. Free memory was 100.6 MB in the beginning and 99.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 477.30 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 60.6 MB in the end (delta: 38.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 615006.71 ms. Allocated memory was 127.9 MB in the beginning and 272.6 MB in the end (delta: 144.7 MB). Free memory was 60.0 MB in the beginning and 83.1 MB in the end (delta: -23.1 MB). Peak memory consumption was 123.1 MB. Max. memory is 16.1 GB. * Witness Printer took 113.85 ms. Allocated memory is still 272.6 MB. Free memory was 83.1 MB in the beginning and 217.8 MB in the end (delta: -134.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[40]; [L16] int i; [L17] i = 0 [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND FALSE !(i < 40) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND FALSE !(i<40 -1) [L57] x[40 -1] = temp [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 614.7s, OverallIterations: 16, TraceHistogramMax: 40, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 172 SDtfs, 0 SDslu, 314 SDs, 0 SdLazy, 531 SolverSat, 793 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3067 GetRequests, 2732 SyntacticMatches, 3 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2068 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=15, 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, 15 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 241.8s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1254 NumberOfCodeBlocks, 1058 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2057 ConstructedInterpolants, 0 QuantifiedInterpolants, 327985 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4924 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 29 InterpolantComputations, 5 PerfectInterpolantSequences, 24284/27298 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...