./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum10.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_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI --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 6c00c1225dae238bedea18c737f72ae44fea020a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 [2021-10-11 02:28:36,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:36,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:36,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:36,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:36,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:36,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:36,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:36,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:36,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:36,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:36,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:36,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:36,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:36,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:36,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:36,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:36,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:36,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:36,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:36,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:36,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:36,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:36,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:36,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:36,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:36,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:36,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:36,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:36,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:36,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:36,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:36,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:36,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:36,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:36,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:36,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:36,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:36,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:36,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:36,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:36,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:36,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:36,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:36,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:36,782 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:36,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:36,783 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:36,783 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:36,783 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:36,783 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:36,783 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:36,783 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:36,784 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:36,784 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:36,784 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:36,784 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:36,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:36,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:36,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:36,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:36,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:36,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:36,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:36,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:36,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:36,787 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:36,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:36,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:36,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:36,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:36,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:36,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:36,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:36,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:36,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:36,789 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:36,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:36,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:36,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:36,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:36,789 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_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c00c1225dae238bedea18c737f72ae44fea020a [2021-10-11 02:28:37,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:37,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:37,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:37,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:37,055 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:37,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/reducercommutativity/rangesum10.i [2021-10-11 02:28:37,121 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/data/b8676ca74/d94c31a1e0a94563a1c05eb05cff9b36/FLAGd89605764 [2021-10-11 02:28:37,595 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:37,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/sv-benchmarks/c/reducercommutativity/rangesum10.i [2021-10-11 02:28:37,602 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/data/b8676ca74/d94c31a1e0a94563a1c05eb05cff9b36/FLAGd89605764 [2021-10-11 02:28:37,992 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/data/b8676ca74/d94c31a1e0a94563a1c05eb05cff9b36 [2021-10-11 02:28:37,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:37,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:38,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:38,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:38,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:38,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:38,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76085683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38, skipping insertion in model container [2021-10-11 02:28:38,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:38,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:38,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:38,206 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/sv-benchmarks/c/reducercommutativity/rangesum10.i[1465,1478] [2021-10-11 02:28:38,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:38,216 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:38,240 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/sv-benchmarks/c/reducercommutativity/rangesum10.i[1465,1478] [2021-10-11 02:28:38,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:38,255 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:38,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38 WrapperNode [2021-10-11 02:28:38,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:38,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:38,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:38,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:38,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:38,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:38,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:38,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:38,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:38,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:38,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:38,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:38,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:28:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:28:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:28:39,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:39,136 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-11 02:28:39,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:39 BoogieIcfgContainer [2021-10-11 02:28:39,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:39,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:39,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:39,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:39,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:37" (1/3) ... [2021-10-11 02:28:39,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13daa3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:39, skipping insertion in model container [2021-10-11 02:28:39,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (2/3) ... [2021-10-11 02:28:39,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13daa3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:39, skipping insertion in model container [2021-10-11 02:28:39,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:39" (3/3) ... [2021-10-11 02:28:39,155 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum10.i [2021-10-11 02:28:39,179 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:39,183 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:39,197 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:39,242 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:39,242 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:39,242 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:39,242 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:39,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:39,242 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:39,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:39,242 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:28:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:39,258 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:39,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:39,260 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:39,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:39,266 INFO L82 PathProgramCache]: Analyzing trace with hash -964703457, now seen corresponding path program 1 times [2021-10-11 02:28:39,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:39,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055161236] [2021-10-11 02:28:39,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:39,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055161236] [2021-10-11 02:28:39,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:39,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:39,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290904774] [2021-10-11 02:28:39,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:39,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:39,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:39,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:39,550 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2021-10-11 02:28:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:39,586 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2021-10-11 02:28:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:39,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:28:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:39,605 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:28:39,605 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:28:39,608 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 [2021-10-11 02:28:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:28:39,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:28:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:28:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2021-10-11 02:28:39,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2021-10-11 02:28:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:39,646 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-10-11 02:28:39,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2021-10-11 02:28:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:28:39,647 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:39,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:39,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:39,647 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2050331539, now seen corresponding path program 1 times [2021-10-11 02:28:39,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:39,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358777898] [2021-10-11 02:28:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:39,678 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:39,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525838539] [2021-10-11 02:28:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:39,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:39,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:28:39,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:28:39,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358777898] [2021-10-11 02:28:39,851 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:39,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525838539] [2021-10-11 02:28:39,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:39,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-11 02:28:39,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419494224] [2021-10-11 02:28:39,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:39,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:39,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:39,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:39,859 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2021-10-11 02:28:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:39,923 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2021-10-11 02:28:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:39,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:28:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:39,924 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:28:39,924 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:28:39,925 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 [2021-10-11 02:28:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:28:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:28:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:28:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-11 02:28:39,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2021-10-11 02:28:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:39,930 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-11 02:28:39,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-11 02:28:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:28:39,931 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:39,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:40,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:28:40,158 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:40,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:40,159 INFO L82 PathProgramCache]: Analyzing trace with hash -939408813, now seen corresponding path program 1 times [2021-10-11 02:28:40,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:40,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940129751] [2021-10-11 02:28:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:40,195 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:40,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231264909] [2021-10-11 02:28:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:40,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:40,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:28:40,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:28:40,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940129751] [2021-10-11 02:28:40,322 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:40,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231264909] [2021-10-11 02:28:40,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:40,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-11 02:28:40,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493249767] [2021-10-11 02:28:40,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:40,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:40,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:40,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:40,325 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2021-10-11 02:28:40,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:40,340 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-10-11 02:28:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:40,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 02:28:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:40,342 INFO L225 Difference]: With dead ends: 24 [2021-10-11 02:28:40,342 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:28:40,342 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 [2021-10-11 02:28:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:28:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:28:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:28:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-10-11 02:28:40,347 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2021-10-11 02:28:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:40,347 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-10-11 02:28:40,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-10-11 02:28:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:28:40,348 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:40,348 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:40,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:40,574 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:40,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1226876461, now seen corresponding path program 1 times [2021-10-11 02:28:40,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:40,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498965278] [2021-10-11 02:28:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:40,598 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:40,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355243806] [2021-10-11 02:28:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:40,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:40,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-11 02:28:40,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-11 02:28:40,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498965278] [2021-10-11 02:28:40,792 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:40,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355243806] [2021-10-11 02:28:40,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122523680] [2021-10-11 02:28:40,814 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:28:40,814 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:40,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:40,825 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:40,826 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:41,953 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 149 [2021-10-11 02:28:43,103 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:43,491 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:43,814 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:43,972 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:44,068 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:44,112 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:44,463 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:44,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:44,685 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:44,848 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:44,950 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-10-11 02:28:45,209 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:45,223 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:45,267 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:45,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:45,328 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:47,467 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:47,557 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:47,688 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:47,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:47,861 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:47,941 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:47,957 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:48,197 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:48,323 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-10-11 02:28:48,616 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:28:48,792 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:48,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:28:48,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-11 02:28:48,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426535869] [2021-10-11 02:28:48,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:28:48,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:48,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:28:48,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:28:48,794 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2021-10-11 02:28:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:48,813 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-10-11 02:28:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:48,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-10-11 02:28:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:48,820 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:28:48,820 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:28:48,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:28:48,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:28:48,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:28:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:28:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-11 02:28:48,829 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2021-10-11 02:28:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:48,830 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-11 02:28:48,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:28:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-11 02:28:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:28:48,832 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:48,832 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:49,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:49,038 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:49,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2012560801, now seen corresponding path program 2 times [2021-10-11 02:28:49,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:49,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973669222] [2021-10-11 02:28:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:49,070 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:49,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760297118] [2021-10-11 02:28:49,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:49,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:28:49,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:28:49,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:49,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:28:49,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:28:49,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973669222] [2021-10-11 02:28:49,312 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:49,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760297118] [2021-10-11 02:28:49,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1784476718] [2021-10-11 02:28:49,317 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:28:49,317 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:49,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:49,318 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:49,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:50,591 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:50,666 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:51,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:51,494 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:51,669 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:51,694 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:51,883 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2021-10-11 02:28:52,033 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,042 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,090 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,128 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,248 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,275 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,441 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,517 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,575 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:52,938 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:53,055 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-10-11 02:28:53,334 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:28:53,496 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:53,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:28:53,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-11 02:28:53,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419438166] [2021-10-11 02:28:53,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:28:53,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:53,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:28:53,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:28:53,498 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2021-10-11 02:28:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:55,605 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2021-10-11 02:28:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:28:55,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2021-10-11 02:28:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:55,607 INFO L225 Difference]: With dead ends: 45 [2021-10-11 02:28:55,607 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:28:55,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:28:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:28:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-11 02:28:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:28:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-11 02:28:55,613 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2021-10-11 02:28:55,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:55,613 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-11 02:28:55,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:28:55,613 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-11 02:28:55,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:28:55,614 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:55,614 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:55,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:55,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:55,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1378594271, now seen corresponding path program 3 times [2021-10-11 02:28:55,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:55,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11198562] [2021-10-11 02:28:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:55,855 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:55,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934237337] [2021-10-11 02:28:55,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:55,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:28:55,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:28:55,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:28:55,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-11 02:28:56,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-11 02:28:56,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11198562] [2021-10-11 02:28:56,091 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:56,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934237337] [2021-10-11 02:28:56,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2053485674] [2021-10-11 02:28:56,094 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:28:56,094 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:56,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:56,094 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:56,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:57,474 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:57,503 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:57,547 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:57,562 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:57,611 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:59,668 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:59,812 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:59,840 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:28:59,875 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:00,008 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:00,055 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:00,137 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:00,454 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:00,692 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-10-11 02:29:00,866 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:29:01,020 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:01,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:29:01,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-10-11 02:29:01,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697929280] [2021-10-11 02:29:01,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:29:01,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:01,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:29:01,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:29:01,022 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2021-10-11 02:29:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:01,166 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2021-10-11 02:29:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:29:01,167 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2021-10-11 02:29:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:01,168 INFO L225 Difference]: With dead ends: 65 [2021-10-11 02:29:01,168 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 02:29:01,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:29:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 02:29:01,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-11 02:29:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 02:29:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-10-11 02:29:01,175 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 32 [2021-10-11 02:29:01,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:01,175 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-10-11 02:29:01,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:29:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-10-11 02:29:01,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-11 02:29:01,177 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:01,177 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:01,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-10-11 02:29:01,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:01,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:01,378 INFO L82 PathProgramCache]: Analyzing trace with hash 373545311, now seen corresponding path program 4 times [2021-10-11 02:29:01,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:01,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396207359] [2021-10-11 02:29:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:01,404 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:01,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042314768] [2021-10-11 02:29:01,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:01,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:29:01,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-10-11 02:29:01,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-10-11 02:29:01,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396207359] [2021-10-11 02:29:01,667 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:01,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042314768] [2021-10-11 02:29:01,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2112455410] [2021-10-11 02:29:01,670 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:29:01,671 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:01,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:01,671 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:01,672 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:02,918 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:03,502 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:03,615 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:03,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:03,670 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:03,855 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,111 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,185 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,399 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,436 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,445 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,497 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,610 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,837 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,860 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:04,882 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:05,091 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:05,218 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-10-11 02:29:05,438 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:29:05,592 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:05,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:29:05,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-11 02:29:05,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335592198] [2021-10-11 02:29:05,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:29:05,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:05,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:29:05,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:29:05,594 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 12 states. [2021-10-11 02:29:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:05,621 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2021-10-11 02:29:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:29:05,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2021-10-11 02:29:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:05,626 INFO L225 Difference]: With dead ends: 90 [2021-10-11 02:29:05,626 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:29:05,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:29:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:29:05,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-11 02:29:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:29:05,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-10-11 02:29:05,634 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 44 [2021-10-11 02:29:05,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:05,634 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-10-11 02:29:05,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:29:05,634 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-10-11 02:29:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-11 02:29:05,636 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:05,636 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:05,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:05,838 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:05,839 INFO L82 PathProgramCache]: Analyzing trace with hash 874144991, now seen corresponding path program 5 times [2021-10-11 02:29:05,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:05,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465904254] [2021-10-11 02:29:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:05,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:05,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208737195] [2021-10-11 02:29:05,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:05,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:29:05,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:29:05,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:29:05,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-11 02:29:06,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-11 02:29:06,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465904254] [2021-10-11 02:29:06,083 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:06,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208737195] [2021-10-11 02:29:06,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1049885765] [2021-10-11 02:29:06,088 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:29:06,088 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:06,088 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:06,088 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:06,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:06,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:07,213 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:07,354 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:07,690 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:07,961 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,044 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,204 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,373 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,422 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,498 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,505 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,522 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,675 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:08,868 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:09,185 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:29:09,327 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:09,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:29:09,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-11 02:29:09,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051300352] [2021-10-11 02:29:09,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:29:09,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:09,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:29:09,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:29:09,328 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2021-10-11 02:29:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:09,357 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2021-10-11 02:29:09,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:29:09,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2021-10-11 02:29:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:09,359 INFO L225 Difference]: With dead ends: 69 [2021-10-11 02:29:09,359 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 02:29:09,359 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 [2021-10-11 02:29:09,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 02:29:09,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-11 02:29:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 02:29:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-11 02:29:09,368 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 50 [2021-10-11 02:29:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:09,368 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-11 02:29:09,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:29:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-11 02:29:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-11 02:29:09,370 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:09,370 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:09,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:09,574 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:09,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:09,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1947618783, now seen corresponding path program 6 times [2021-10-11 02:29:09,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:09,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722301392] [2021-10-11 02:29:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:09,596 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:09,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406615147] [2021-10-11 02:29:09,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:09,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:29:09,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:29:09,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:29:09,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-11 02:29:09,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-11 02:29:09,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722301392] [2021-10-11 02:29:09,872 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:09,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406615147] [2021-10-11 02:29:09,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [900706912] [2021-10-11 02:29:09,874 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:29:09,875 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:09,875 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:09,875 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:09,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:10,686 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:10,772 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:10,780 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:10,851 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:10,908 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:10,917 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:10,973 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:10,981 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:10,990 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:13,263 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:13,344 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:15,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:15,610 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:15,745 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-10-11 02:29:15,968 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:29:16,143 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:16,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:29:16,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-10-11 02:29:16,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596583704] [2021-10-11 02:29:16,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:29:16,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:16,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:29:16,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:29:16,145 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 11 states. [2021-10-11 02:29:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:16,189 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-10-11 02:29:16,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:29:16,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2021-10-11 02:29:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:16,191 INFO L225 Difference]: With dead ends: 72 [2021-10-11 02:29:16,191 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 02:29:16,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:29:16,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 02:29:16,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-11 02:29:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-10-11 02:29:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-10-11 02:29:16,196 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 54 [2021-10-11 02:29:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:16,196 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-10-11 02:29:16,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:29:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-10-11 02:29:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-11 02:29:16,197 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:16,198 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:16,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2021-10-11 02:29:16,402 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:16,403 INFO L82 PathProgramCache]: Analyzing trace with hash -75361405, now seen corresponding path program 7 times [2021-10-11 02:29:16,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:16,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171726460] [2021-10-11 02:29:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:16,430 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:16,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042156009] [2021-10-11 02:29:16,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:17,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:17,883 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:18,438 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:18,439 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:18,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:18,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:18 BoogieIcfgContainer [2021-10-11 02:29:18,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:18,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:18,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:18,733 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:18,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:39" (3/4) ... [2021-10-11 02:29:18,735 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:18,827 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4290838-e1b3-42ac-b801-8baf3e2d0bc5/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:18,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:18,828 INFO L168 Benchmark]: Toolchain (without parser) took 40829.44 ms. Allocated memory was 94.4 MB in the beginning and 262.1 MB in the end (delta: 167.8 MB). Free memory was 67.2 MB in the beginning and 165.8 MB in the end (delta: -98.6 MB). Peak memory consumption was 70.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:18,828 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:18,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.20 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 56.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:18,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.40 ms. Allocated memory is still 94.4 MB. Free memory was 56.9 MB in the beginning and 55.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:18,828 INFO L168 Benchmark]: Boogie Preprocessor took 31.96 ms. Allocated memory is still 94.4 MB. Free memory was 55.0 MB in the beginning and 53.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:18,829 INFO L168 Benchmark]: RCFGBuilder took 804.14 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 53.5 MB in the beginning and 73.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:18,829 INFO L168 Benchmark]: TraceAbstraction took 39591.75 ms. Allocated memory was 123.7 MB in the beginning and 262.1 MB in the end (delta: 138.4 MB). Free memory was 72.5 MB in the beginning and 173.2 MB in the end (delta: -100.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:18,829 INFO L168 Benchmark]: Witness Printer took 94.34 ms. Allocated memory is still 262.1 MB. Free memory was 173.2 MB in the beginning and 165.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:18,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.20 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 56.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.40 ms. Allocated memory is still 94.4 MB. Free memory was 56.9 MB in the beginning and 55.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.96 ms. Allocated memory is still 94.4 MB. Free memory was 55.0 MB in the beginning and 53.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 804.14 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 53.5 MB in the beginning and 73.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 39591.75 ms. Allocated memory was 123.7 MB in the beginning and 262.1 MB in the end (delta: 138.4 MB). Free memory was 72.5 MB in the beginning and 173.2 MB in the end (delta: -100.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Witness Printer took 94.34 ms. Allocated memory is still 262.1 MB. Free memory was 173.2 MB in the beginning and 165.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 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[10]; [L16] int i; [L17] i = 0 [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND FALSE !(i < 10) [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 < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 10) [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 < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 10) [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<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND FALSE !(i<10 -1) [L57] x[10 -1] = temp [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 10) [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: 39.4s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 0 SDslu, 165 SDs, 0 SdLazy, 138 SolverSat, 107 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 685 GetRequests, 597 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=9, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 306 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 473 ConstructedInterpolants, 0 QuantifiedInterpolants, 22101 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1510 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 1410/1528 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...