./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS --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 a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:44:04,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:44:04,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:44:04,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:44:04,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:44:04,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:44:04,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:44:04,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:44:04,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:44:04,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:44:04,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:44:04,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:44:04,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:44:04,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:44:04,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:44:04,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:44:04,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:44:04,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:44:04,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:44:04,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:44:04,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:44:04,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:44:04,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:44:04,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:44:04,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:44:04,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:44:04,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:44:04,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:44:04,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:44:04,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:44:04,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:44:04,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:44:04,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:44:04,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:44:04,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:44:04,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:44:04,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:44:04,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:44:04,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:44:04,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:44:04,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:44:04,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:44:04,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:44:04,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:44:04,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:44:04,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:44:04,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:44:04,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:44:04,290 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:44:04,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:44:04,291 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:44:04,291 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:44:04,292 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:44:04,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:44:04,293 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:44:04,293 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:44:04,293 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:44:04,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:44:04,294 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:44:04,294 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:44:04,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:44:04,295 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:44:04,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:44:04,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:44:04,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:44:04,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:44:04,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:44:04,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:44:04,297 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:44:04,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:44:04,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:44:04,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:44:04,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:44:04,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:44:04,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:44:04,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:44:04,299 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:44:04,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:44:04,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:44:04,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:44:04,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:44:04,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:44:04,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:44:04,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf [2022-11-19 06:44:04,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:44:04,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:44:04,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:44:04,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:44:04,680 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:44:04,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/reducercommutativity/rangesum40.i [2022-11-19 06:44:04,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/data/6118c1dc0/f8d17e2c39dc4ff693d85ae61fd40521/FLAGdec54d3f7 [2022-11-19 06:44:05,401 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:44:05,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/sv-benchmarks/c/reducercommutativity/rangesum40.i [2022-11-19 06:44:05,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/data/6118c1dc0/f8d17e2c39dc4ff693d85ae61fd40521/FLAGdec54d3f7 [2022-11-19 06:44:05,770 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/data/6118c1dc0/f8d17e2c39dc4ff693d85ae61fd40521 [2022-11-19 06:44:05,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:44:05,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:44:05,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:44:05,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:44:05,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:44:05,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:44:05" (1/1) ... [2022-11-19 06:44:05,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56295916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:05, skipping insertion in model container [2022-11-19 06:44:05,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:44:05" (1/1) ... [2022-11-19 06:44:05,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:44:05,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:44:06,027 WARN L234 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_d54f08c9-fdf9-4090-9a21-dfdea612990b/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2022-11-19 06:44:06,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:44:06,042 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:44:06,069 WARN L234 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_d54f08c9-fdf9-4090-9a21-dfdea612990b/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2022-11-19 06:44:06,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:44:06,086 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:44:06,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06 WrapperNode [2022-11-19 06:44:06,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:44:06,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:44:06,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:44:06,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:44:06,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,148 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-19 06:44:06,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:44:06,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:44:06,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:44:06,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:44:06,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,182 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:44:06,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:44:06,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:44:06,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:44:06,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (1/1) ... [2022-11-19 06:44:06,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:44:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:06,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:44:06,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:44:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:44:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:44:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:44:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:44:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:44:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:44:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:44:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2022-11-19 06:44:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2022-11-19 06:44:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:44:06,406 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:44:06,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:44:06,609 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:44:06,702 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:44:06,703 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 06:44:06,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:44:06 BoogieIcfgContainer [2022-11-19 06:44:06,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:44:06,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:44:06,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:44:06,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:44:06,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:44:05" (1/3) ... [2022-11-19 06:44:06,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a36636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:44:06, skipping insertion in model container [2022-11-19 06:44:06,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:06" (2/3) ... [2022-11-19 06:44:06,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a36636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:44:06, skipping insertion in model container [2022-11-19 06:44:06,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:44:06" (3/3) ... [2022-11-19 06:44:06,736 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2022-11-19 06:44:06,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:44:06,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:44:06,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:44:06,885 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2af028e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:44:06,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:44:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:06,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 06:44:06,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:06,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:06,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash -362891911, now seen corresponding path program 1 times [2022-11-19 06:44:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:06,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283388445] [2022-11-19 06:44:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:07,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:07,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283388445] [2022-11-19 06:44:07,096 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 06:44:07,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481305001] [2022-11-19 06:44:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:07,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:07,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:07,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:07,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:44:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:07,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:44:07,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 06:44:07,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:44:07,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481305001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:44:07,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:44:07,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:44:07,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94308392] [2022-11-19 06:44:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:44:07,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:44:07,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:07,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:44:07,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:44:07,360 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 06:44:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:07,418 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-11-19 06:44:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:44:07,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2022-11-19 06:44:07,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:07,455 INFO L225 Difference]: With dead ends: 33 [2022-11-19 06:44:07,456 INFO L226 Difference]: Without dead ends: 16 [2022-11-19 06:44:07,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:44:07,468 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:07,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:44:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-19 06:44:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-19 06:44:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-19 06:44:07,527 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2022-11-19 06:44:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:07,528 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-19 06:44:07,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 06:44:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-19 06:44:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 06:44:07,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:07,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:07,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:44:07,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:07,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:07,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1234920756, now seen corresponding path program 1 times [2022-11-19 06:44:07,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:07,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852487191] [2022-11-19 06:44:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:07,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:07,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:07,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852487191] [2022-11-19 06:44:07,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 06:44:07,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748092021] [2022-11-19 06:44:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:07,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:07,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:07,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:07,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:44:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:07,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:44:07,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:44:08,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:44:08,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748092021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:44:08,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:44:08,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:44:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833392995] [2022-11-19 06:44:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:44:08,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:44:08,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:44:08,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:44:08,024 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:44:08,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:08,068 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-11-19 06:44:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:44:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-11-19 06:44:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:08,073 INFO L225 Difference]: With dead ends: 29 [2022-11-19 06:44:08,074 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 06:44:08,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:44:08,077 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:08,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:44:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 06:44:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-19 06:44:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-19 06:44:08,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-11-19 06:44:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:08,084 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-19 06:44:08,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:44:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-19 06:44:08,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 06:44:08,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:08,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:08,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:08,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:08,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:08,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash -877476800, now seen corresponding path program 1 times [2022-11-19 06:44:08,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:08,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887586373] [2022-11-19 06:44:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:08,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887586373] [2022-11-19 06:44:08,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 06:44:08,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570690653] [2022-11-19 06:44:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:08,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:08,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:08,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:08,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:44:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:08,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:44:08,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 06:44:08,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:44:08,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570690653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:44:08,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:44:08,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:44:08,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883234289] [2022-11-19 06:44:08,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:44:08,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:44:08,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:08,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:44:08,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:44:08,476 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:44:08,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:08,503 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-19 06:44:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:44:08,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-19 06:44:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:08,505 INFO L225 Difference]: With dead ends: 27 [2022-11-19 06:44:08,505 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 06:44:08,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:44:08,507 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:08,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:44:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 06:44:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 06:44:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-19 06:44:08,513 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2022-11-19 06:44:08,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:08,515 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-19 06:44:08,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:44:08,516 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-19 06:44:08,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 06:44:08,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:08,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:08,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:08,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:08,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:08,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:08,724 INFO L85 PathProgramCache]: Analyzing trace with hash 140313158, now seen corresponding path program 1 times [2022-11-19 06:44:08,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:08,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2432824] [2022-11-19 06:44:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:08,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:08,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:08,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2432824] [2022-11-19 06:44:08,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 06:44:08,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255277772] [2022-11-19 06:44:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:08,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:08,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:08,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:08,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:44:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:08,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:44:08,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:44:08,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:44:09,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255277772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:09,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1399224041] [2022-11-19 06:44:09,027 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:09,027 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:09,034 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:09,041 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:09,042 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:09,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:09,200 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:44:09,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 06:44:09,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:09,245 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:09,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:09,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:09,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-19 06:44:09,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:09,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:09,469 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 06:44:09,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 208 [2022-11-19 06:44:09,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:10,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:10,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:10,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-19 06:44:10,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:10,380 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-19 06:44:10,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-19 06:44:10,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:10,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:10,681 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:10,941 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:11,918 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '576#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:11,918 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:11,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:11,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2022-11-19 06:44:11,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024273901] [2022-11-19 06:44:11,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:44:11,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:11,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:44:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:44:11,921 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:44:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:11,964 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-19 06:44:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:44:11,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2022-11-19 06:44:11,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:11,966 INFO L225 Difference]: With dead ends: 36 [2022-11-19 06:44:11,967 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 06:44:11,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:44:11,968 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:11,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:44:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 06:44:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-19 06:44:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-19 06:44:11,974 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2022-11-19 06:44:11,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:11,974 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-19 06:44:11,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:44:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-19 06:44:11,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 06:44:11,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:11,976 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:11,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:12,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:12,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:12,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:12,177 INFO L85 PathProgramCache]: Analyzing trace with hash 139189043, now seen corresponding path program 2 times [2022-11-19 06:44:12,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:12,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560929063] [2022-11-19 06:44:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:12,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:12,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:12,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792631615] [2022-11-19 06:44:12,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:44:12,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:12,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:12,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:12,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:44:12,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:44:12,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:12,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:44:12,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 06:44:12,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 06:44:12,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:12,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560929063] [2022-11-19 06:44:12,386 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:12,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792631615] [2022-11-19 06:44:12,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792631615] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:12,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1284738693] [2022-11-19 06:44:12,395 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:12,395 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:12,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:12,396 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:12,397 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:12,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:12,446 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:12,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:12,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:12,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 06:44:12,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:12,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:44:12,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:12,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:12,579 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 06:44:12,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 209 [2022-11-19 06:44:12,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:12,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:13,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:13,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:13,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-19 06:44:13,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:13,116 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 06:44:13,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-19 06:44:13,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:13,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:13,325 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:13,560 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:14,580 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '847#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:14,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:14,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:14,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-19 06:44:14,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990258941] [2022-11-19 06:44:14,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:14,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:44:14,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:44:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:44:14,582 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 06:44:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:14,621 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-11-19 06:44:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:44:14,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-19 06:44:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:14,623 INFO L225 Difference]: With dead ends: 38 [2022-11-19 06:44:14,623 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 06:44:14,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:44:14,625 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:14,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:44:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 06:44:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-19 06:44:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-19 06:44:14,631 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2022-11-19 06:44:14,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:14,631 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-19 06:44:14,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 06:44:14,632 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-19 06:44:14,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 06:44:14,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:14,633 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:14,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:14,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:14,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:14,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash 378555129, now seen corresponding path program 3 times [2022-11-19 06:44:14,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:14,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301870029] [2022-11-19 06:44:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:14,868 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:14,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920713297] [2022-11-19 06:44:14,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:44:14,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:14,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:14,878 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:14,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:44:14,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:44:14,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:14,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:44:14,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 06:44:15,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 06:44:15,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:15,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301870029] [2022-11-19 06:44:15,118 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:15,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920713297] [2022-11-19 06:44:15,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920713297] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:15,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [211765632] [2022-11-19 06:44:15,122 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:15,123 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:15,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:15,123 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:15,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:15,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:15,178 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:15,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:15,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:15,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 06:44:15,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:15,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-19 06:44:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:15,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:15,305 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 06:44:15,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 208 [2022-11-19 06:44:15,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:15,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:15,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:15,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:15,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-19 06:44:15,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:15,775 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 06:44:15,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-19 06:44:15,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:15,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:15,953 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:16,156 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:17,076 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1188#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:17,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:17,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:17,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2022-11-19 06:44:17,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141943302] [2022-11-19 06:44:17,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:17,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:44:17,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:17,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:44:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:44:17,079 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:44:17,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:17,123 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-11-19 06:44:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:44:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2022-11-19 06:44:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:17,125 INFO L225 Difference]: With dead ends: 48 [2022-11-19 06:44:17,125 INFO L226 Difference]: Without dead ends: 30 [2022-11-19 06:44:17,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:44:17,127 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:17,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:44:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-19 06:44:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-19 06:44:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-19 06:44:17,134 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 37 [2022-11-19 06:44:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:17,134 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-19 06:44:17,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:44:17,135 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-19 06:44:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 06:44:17,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:17,136 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:17,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:17,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:17,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:17,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1272494041, now seen corresponding path program 4 times [2022-11-19 06:44:17,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:17,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338792635] [2022-11-19 06:44:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:17,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:17,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:17,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567159801] [2022-11-19 06:44:17,404 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:44:17,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:17,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:17,406 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:17,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:44:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:17,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:44:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 06:44:17,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 06:44:18,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:18,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338792635] [2022-11-19 06:44:18,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:18,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567159801] [2022-11-19 06:44:18,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567159801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:18,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2088127215] [2022-11-19 06:44:18,006 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:18,006 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:18,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:18,007 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:18,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:18,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:18,064 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:18,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:18,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:18,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 06:44:18,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:18,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:44:18,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:18,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:18,207 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 06:44:18,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 209 [2022-11-19 06:44:18,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:18,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:18,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:18,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:18,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-19 06:44:18,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:18,682 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 06:44:18,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-19 06:44:18,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:18,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:18,845 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:19,035 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:20,026 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1609#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:20,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:20,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:20,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2022-11-19 06:44:20,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684116296] [2022-11-19 06:44:20,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:20,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:44:20,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:20,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:44:20,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:44:20,030 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:44:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:20,102 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2022-11-19 06:44:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:44:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 43 [2022-11-19 06:44:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:20,104 INFO L225 Difference]: With dead ends: 60 [2022-11-19 06:44:20,104 INFO L226 Difference]: Without dead ends: 42 [2022-11-19 06:44:20,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:44:20,106 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:20,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:44:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-19 06:44:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-19 06:44:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-11-19 06:44:20,113 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 43 [2022-11-19 06:44:20,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:20,113 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-11-19 06:44:20,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:44:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-11-19 06:44:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 06:44:20,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:20,115 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:20,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:20,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:20,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:20,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:20,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1480595865, now seen corresponding path program 5 times [2022-11-19 06:44:20,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:20,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765431096] [2022-11-19 06:44:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:20,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:20,394 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:20,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819388601] [2022-11-19 06:44:20,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:44:20,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:20,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:20,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:20,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 06:44:20,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:44:20,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:20,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:44:20,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-19 06:44:20,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-19 06:44:20,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:20,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765431096] [2022-11-19 06:44:20,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:20,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819388601] [2022-11-19 06:44:20,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819388601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:20,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1731097900] [2022-11-19 06:44:20,597 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:20,598 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:20,598 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:20,598 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:20,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:20,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:20,625 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:44:20,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 06:44:20,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:20,655 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:20,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:20,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:20,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-19 06:44:20,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:20,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:20,777 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 06:44:20,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 208 [2022-11-19 06:44:20,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:21,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:21,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:21,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:21,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-19 06:44:21,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:21,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:21,383 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:21,606 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:22,705 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2132#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:22,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:22,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:22,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-19 06:44:22,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903432190] [2022-11-19 06:44:22,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:22,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:44:22,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:22,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:44:22,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:44:22,707 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:44:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:22,752 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-11-19 06:44:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:44:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-11-19 06:44:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:22,755 INFO L225 Difference]: With dead ends: 57 [2022-11-19 06:44:22,755 INFO L226 Difference]: Without dead ends: 45 [2022-11-19 06:44:22,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:44:22,757 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:22,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:44:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-19 06:44:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-19 06:44:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-11-19 06:44:22,765 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 55 [2022-11-19 06:44:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:22,766 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-11-19 06:44:22,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:44:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-11-19 06:44:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 06:44:22,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:22,768 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:22,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-19 06:44:22,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:22,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:22,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:22,975 INFO L85 PathProgramCache]: Analyzing trace with hash -496280295, now seen corresponding path program 6 times [2022-11-19 06:44:22,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:22,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838133043] [2022-11-19 06:44:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:23,061 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:23,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686283996] [2022-11-19 06:44:23,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:44:23,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:23,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:23,087 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:23,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 06:44:23,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:44:23,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:23,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 06:44:23,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-19 06:44:23,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-19 06:44:24,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838133043] [2022-11-19 06:44:24,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686283996] [2022-11-19 06:44:24,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686283996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [702658390] [2022-11-19 06:44:24,472 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:24,472 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:24,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:24,473 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:24,473 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:24,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:24,507 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:44:24,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 06:44:24,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:24,543 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:24,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:24,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:24,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:44:24,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:24,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:24,664 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 06:44:24,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 209 [2022-11-19 06:44:24,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:24,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:25,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:25,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-19 06:44:25,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:25,151 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-19 06:44:25,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-11-19 06:44:25,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:25,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:25,332 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:25,483 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:26,617 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2711#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:26,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:26,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:26,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 42 [2022-11-19 06:44:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15368584] [2022-11-19 06:44:26,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:26,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-19 06:44:26,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:26,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-19 06:44:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 06:44:26,622 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:44:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:26,761 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2022-11-19 06:44:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-19 06:44:26,762 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-11-19 06:44:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:26,763 INFO L225 Difference]: With dead ends: 84 [2022-11-19 06:44:26,763 INFO L226 Difference]: Without dead ends: 63 [2022-11-19 06:44:26,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 113 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 06:44:26,765 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:26,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:44:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-19 06:44:26,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-19 06:44:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-11-19 06:44:26,786 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 58 [2022-11-19 06:44:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:26,786 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-11-19 06:44:26,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:44:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-11-19 06:44:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 06:44:26,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:26,791 INFO L195 NwaCegarLoop]: trace histogram [40, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:26,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:26,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-19 06:44:26,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2082672007, now seen corresponding path program 7 times [2022-11-19 06:44:27,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:27,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678276747] [2022-11-19 06:44:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:27,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:27,066 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:27,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402043232] [2022-11-19 06:44:27,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:44:27,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:27,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:27,068 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:27,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 06:44:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:27,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:44:27,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2022-11-19 06:44:27,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2022-11-19 06:44:27,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:27,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678276747] [2022-11-19 06:44:27,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:27,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402043232] [2022-11-19 06:44:27,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402043232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:27,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1327043750] [2022-11-19 06:44:27,431 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:27,432 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:27,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:27,432 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:27,433 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:27,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:27,471 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:27,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:27,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:27,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 06:44:27,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:27,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:44:27,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:27,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:27,600 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 06:44:27,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 209 [2022-11-19 06:44:27,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:27,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:28,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:28,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-19 06:44:28,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:28,164 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-19 06:44:28,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-19 06:44:28,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:28,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:28,369 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:28,562 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:29,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3456#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:29,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:29,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:29,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-19 06:44:29,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313504544] [2022-11-19 06:44:29,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:29,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:44:29,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:29,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:44:29,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:44:29,399 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:44:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:29,467 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2022-11-19 06:44:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:44:29,467 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 76 [2022-11-19 06:44:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:29,468 INFO L225 Difference]: With dead ends: 89 [2022-11-19 06:44:29,469 INFO L226 Difference]: Without dead ends: 69 [2022-11-19 06:44:29,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:44:29,470 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:29,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:44:29,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-19 06:44:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-19 06:44:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-11-19 06:44:29,483 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 76 [2022-11-19 06:44:29,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:29,484 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-11-19 06:44:29,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:44:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-11-19 06:44:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 06:44:29,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:29,486 INFO L195 NwaCegarLoop]: trace histogram [40, 30, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:29,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:29,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 06:44:29,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:29,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:29,687 INFO L85 PathProgramCache]: Analyzing trace with hash 803884729, now seen corresponding path program 8 times [2022-11-19 06:44:29,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:29,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070334109] [2022-11-19 06:44:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:29,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:29,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:29,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990600438] [2022-11-19 06:44:29,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:44:29,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:29,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:29,795 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:29,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 06:44:30,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 06:44:30,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:30,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:44:30,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 246 proven. 10 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2022-11-19 06:44:30,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2022-11-19 06:44:30,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:30,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070334109] [2022-11-19 06:44:30,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:30,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990600438] [2022-11-19 06:44:30,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990600438] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:30,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1983326401] [2022-11-19 06:44:30,167 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:30,167 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:30,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:30,168 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:30,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:30,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:30,197 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:44:30,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 06:44:30,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:30,231 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:30,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:30,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:30,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-19 06:44:30,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:30,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:30,334 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 06:44:30,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 208 [2022-11-19 06:44:30,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:30,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:30,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:30,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:30,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-19 06:44:30,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:30,815 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 06:44:30,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-19 06:44:30,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:30,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:30,990 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:31,155 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:32,126 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4331#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:32,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:32,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:32,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-19 06:44:32,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546699137] [2022-11-19 06:44:32,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:32,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:44:32,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:32,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:44:32,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:44:32,129 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:44:32,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:32,193 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2022-11-19 06:44:32,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:44:32,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 94 [2022-11-19 06:44:32,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:32,195 INFO L225 Difference]: With dead ends: 93 [2022-11-19 06:44:32,195 INFO L226 Difference]: Without dead ends: 75 [2022-11-19 06:44:32,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:44:32,197 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:32,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:44:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-19 06:44:32,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-19 06:44:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-11-19 06:44:32,206 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 94 [2022-11-19 06:44:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:32,207 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-11-19 06:44:32,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:44:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-11-19 06:44:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 06:44:32,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:32,209 INFO L195 NwaCegarLoop]: trace histogram [40, 30, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:32,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:32,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:32,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1435735737, now seen corresponding path program 9 times [2022-11-19 06:44:32,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:32,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122512528] [2022-11-19 06:44:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:32,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:32,483 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:32,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536683258] [2022-11-19 06:44:32,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:44:32,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:32,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:32,485 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:32,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 06:44:32,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:44:32,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:32,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:44:32,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2022-11-19 06:44:32,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2022-11-19 06:44:33,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:33,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122512528] [2022-11-19 06:44:33,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:33,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536683258] [2022-11-19 06:44:33,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536683258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:33,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [395462190] [2022-11-19 06:44:33,169 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:33,170 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:33,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:33,170 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:33,171 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:33,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:33,204 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:44:33,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 06:44:33,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:33,234 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:33,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:33,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:33,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:44:33,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:33,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:33,347 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 06:44:33,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 209 [2022-11-19 06:44:33,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:33,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:33,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:33,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-19 06:44:33,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:33,889 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-19 06:44:33,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-11-19 06:44:33,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:33,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:34,076 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:34,239 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:35,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5276#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:35,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:35,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:35,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-19 06:44:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657645729] [2022-11-19 06:44:35,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:35,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:44:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:44:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:44:35,156 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:44:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:35,243 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2022-11-19 06:44:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:44:35,244 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2022-11-19 06:44:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:35,245 INFO L225 Difference]: With dead ends: 119 [2022-11-19 06:44:35,245 INFO L226 Difference]: Without dead ends: 87 [2022-11-19 06:44:35,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:44:35,247 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:35,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:44:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-19 06:44:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-19 06:44:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2022-11-19 06:44:35,264 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 100 [2022-11-19 06:44:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:35,265 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2022-11-19 06:44:35,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:44:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2022-11-19 06:44:35,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-19 06:44:35,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:35,274 INFO L195 NwaCegarLoop]: trace histogram [66, 40, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:35,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:35,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:35,475 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:35,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1634853063, now seen corresponding path program 10 times [2022-11-19 06:44:35,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:35,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943483777] [2022-11-19 06:44:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:35,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:35,547 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:35,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483300829] [2022-11-19 06:44:35,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:44:35,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:35,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:35,549 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:35,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 06:44:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:35,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 06:44:35,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3227 backedges. 1060 proven. 253 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2022-11-19 06:44:36,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3227 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2022-11-19 06:44:36,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:36,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943483777] [2022-11-19 06:44:36,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:36,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483300829] [2022-11-19 06:44:36,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483300829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:36,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1699095340] [2022-11-19 06:44:36,948 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:36,948 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:36,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:36,949 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:36,949 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:36,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:36,980 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:36,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:36,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:36,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 06:44:37,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:37,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:44:37,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:37,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:37,088 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 06:44:37,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 209 [2022-11-19 06:44:37,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:37,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:37,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:37,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:37,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-19 06:44:37,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:37,495 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 06:44:37,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-19 06:44:37,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:37,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:37,639 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:37,798 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:39,126 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6529#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:39,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:39,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:39,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 42 [2022-11-19 06:44:39,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787741553] [2022-11-19 06:44:39,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:39,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-19 06:44:39,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:39,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-19 06:44:39,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 06:44:39,129 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:44:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:39,260 INFO L93 Difference]: Finished difference Result 149 states and 176 transitions. [2022-11-19 06:44:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-19 06:44:39,261 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 136 [2022-11-19 06:44:39,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:39,263 INFO L225 Difference]: With dead ends: 149 [2022-11-19 06:44:39,264 INFO L226 Difference]: Without dead ends: 105 [2022-11-19 06:44:39,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 347 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 06:44:39,267 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:39,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:44:39,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-19 06:44:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-19 06:44:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2022-11-19 06:44:39,282 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 136 [2022-11-19 06:44:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:39,284 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2022-11-19 06:44:39,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:44:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2022-11-19 06:44:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-19 06:44:39,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:39,292 INFO L195 NwaCegarLoop]: trace histogram [120, 40, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:39,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:39,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 06:44:39,501 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:39,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2141770745, now seen corresponding path program 11 times [2022-11-19 06:44:39,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:39,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598454497] [2022-11-19 06:44:39,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:39,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:39,592 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:39,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133476411] [2022-11-19 06:44:39,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:44:39,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:39,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:39,594 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:39,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 06:44:41,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-19 06:44:41,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:41,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:44:41,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 3366 proven. 55 refuted. 0 times theorem prover too weak. 4963 trivial. 0 not checked. [2022-11-19 06:44:41,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2022-11-19 06:44:41,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:41,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598454497] [2022-11-19 06:44:41,455 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:41,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133476411] [2022-11-19 06:44:41,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133476411] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:41,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1427018915] [2022-11-19 06:44:41,458 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:41,458 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:41,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:41,459 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:41,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:41,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:41,488 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:44:41,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 06:44:41,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:41,521 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:41,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:41,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:41,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:44:41,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:41,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:41,638 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 06:44:41,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 209 [2022-11-19 06:44:41,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:41,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:42,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:42,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:42,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-19 06:44:42,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:42,100 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 06:44:42,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-19 06:44:42,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:42,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:42,300 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:42,485 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:43,421 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8184#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:43,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:43,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:43,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-19 06:44:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481748702] [2022-11-19 06:44:43,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:44:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:44:43,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:44:43,425 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:44:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:43,492 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2022-11-19 06:44:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:44:43,493 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 190 [2022-11-19 06:44:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:43,495 INFO L225 Difference]: With dead ends: 165 [2022-11-19 06:44:43,495 INFO L226 Difference]: Without dead ends: 117 [2022-11-19 06:44:43,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 533 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:44:43,497 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:43,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:44:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-19 06:44:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-19 06:44:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2022-11-19 06:44:43,512 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 190 [2022-11-19 06:44:43,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:43,513 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2022-11-19 06:44:43,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:44:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2022-11-19 06:44:43,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-19 06:44:43,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:43,516 INFO L195 NwaCegarLoop]: trace histogram [120, 40, 22, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:43,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-19 06:44:43,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 06:44:43,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash 732079097, now seen corresponding path program 12 times [2022-11-19 06:44:43,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:43,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036121691] [2022-11-19 06:44:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:43,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:43,843 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:43,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219988504] [2022-11-19 06:44:43,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:44:43,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:43,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:43,851 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:43,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 06:44:44,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:44:44,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:44,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 06:44:44,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8582 backedges. 3366 proven. 253 refuted. 0 times theorem prover too weak. 4963 trivial. 0 not checked. [2022-11-19 06:44:44,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8582 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2022-11-19 06:44:45,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036121691] [2022-11-19 06:44:45,421 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:44:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219988504] [2022-11-19 06:44:45,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219988504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [536442804] [2022-11-19 06:44:45,423 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:44:45,423 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:44:45,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:44:45,424 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:44:45,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:44:45,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:45,450 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:44:45,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 06:44:45,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:45,479 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:44:45,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:44:45,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:45,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:44:45,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:45,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:44:45,588 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 06:44:45,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 209 [2022-11-19 06:44:45,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:44:45,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:44:45,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:45,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-19 06:44:45,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:46,005 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-19 06:44:46,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-19 06:44:46,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:44:46,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:44:46,200 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-11-19 06:44:46,381 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:47,485 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9986#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:44:47,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:44:47,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:44:47,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 41 [2022-11-19 06:44:47,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815472056] [2022-11-19 06:44:47,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:47,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-19 06:44:47,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:47,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-19 06:44:47,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=1880, Unknown=0, NotChecked=0, Total=2756 [2022-11-19 06:44:47,490 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:44:47,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:47,571 INFO L93 Difference]: Finished difference Result 182 states and 203 transitions. [2022-11-19 06:44:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-19 06:44:47,573 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 202 [2022-11-19 06:44:47,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:47,575 INFO L225 Difference]: With dead ends: 182 [2022-11-19 06:44:47,575 INFO L226 Difference]: Without dead ends: 134 [2022-11-19 06:44:47,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 545 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=876, Invalid=1880, Unknown=0, NotChecked=0, Total=2756 [2022-11-19 06:44:47,577 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:47,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:44:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-19 06:44:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-19 06:44:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 129 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:44:47,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2022-11-19 06:44:47,589 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 202 [2022-11-19 06:44:47,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:47,589 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2022-11-19 06:44:47,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:44:47,590 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2022-11-19 06:44:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-19 06:44:47,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:47,593 INFO L195 NwaCegarLoop]: trace histogram [120, 40, 39, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:47,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-19 06:44:47,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:47,802 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:47,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:47,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1809159097, now seen corresponding path program 13 times [2022-11-19 06:44:47,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:47,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329896367] [2022-11-19 06:44:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:47,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:47,880 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:44:47,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087493758] [2022-11-19 06:44:47,881 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:44:47,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:47,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:47,882 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:47,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-19 06:50:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:50:04,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:57:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:57:04,846 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:57:04,846 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:57:04,849 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:57:04,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-19 06:57:05,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 06:57:05,079 INFO L444 BasicCegarLoop]: Path program histogram: [13, 1, 1, 1] [2022-11-19 06:57:05,085 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:57:05,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:57:05 BoogieIcfgContainer [2022-11-19 06:57:05,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:57:05,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:57:05,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:57:05,345 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:57:05,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:44:06" (3/4) ... [2022-11-19 06:57:05,347 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 06:57:05,576 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:57:05,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:57:05,581 INFO L158 Benchmark]: Toolchain (without parser) took 779802.65ms. Allocated memory was 109.1MB in the beginning and 490.7MB in the end (delta: 381.7MB). Free memory was 70.4MB in the beginning and 208.3MB in the end (delta: -138.0MB). Peak memory consumption was 242.0MB. Max. memory is 16.1GB. [2022-11-19 06:57:05,582 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:57:05,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.91ms. Allocated memory is still 109.1MB. Free memory was 70.1MB in the beginning and 85.2MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:57:05,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.37ms. Allocated memory is still 109.1MB. Free memory was 85.2MB in the beginning and 83.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:57:05,583 INFO L158 Benchmark]: Boogie Preprocessor took 36.09ms. Allocated memory is still 109.1MB. Free memory was 83.9MB in the beginning and 82.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:57:05,583 INFO L158 Benchmark]: RCFGBuilder took 518.24ms. Allocated memory is still 109.1MB. Free memory was 82.2MB in the beginning and 67.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:57:05,584 INFO L158 Benchmark]: TraceAbstraction took 778632.62ms. Allocated memory was 109.1MB in the beginning and 490.7MB in the end (delta: 381.7MB). Free memory was 66.4MB in the beginning and 226.2MB in the end (delta: -159.8MB). Peak memory consumption was 223.4MB. Max. memory is 16.1GB. [2022-11-19 06:57:05,584 INFO L158 Benchmark]: Witness Printer took 231.95ms. Allocated memory is still 490.7MB. Free memory was 226.2MB in the beginning and 208.3MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 06:57:05,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.91ms. Allocated memory is still 109.1MB. Free memory was 70.1MB in the beginning and 85.2MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.37ms. Allocated memory is still 109.1MB. Free memory was 85.2MB in the beginning and 83.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.09ms. Allocated memory is still 109.1MB. Free memory was 83.9MB in the beginning and 82.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 518.24ms. Allocated memory is still 109.1MB. Free memory was 82.2MB in the beginning and 67.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 778632.62ms. Allocated memory was 109.1MB in the beginning and 490.7MB in the end (delta: 381.7MB). Free memory was 66.4MB in the beginning and 226.2MB in the end (delta: -159.8MB). Peak memory consumption was 223.4MB. Max. memory is 16.1GB. * Witness Printer took 231.95ms. Allocated memory is still 490.7MB. Free memory was 226.2MB in the beginning and 208.3MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[40]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=6, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=7, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=8, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=9, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=10, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=11, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=12, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=13, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=14, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=15, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=16, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=17, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=18, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=19, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=20, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=21, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=22, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=23, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=24, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=25, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=26, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=27, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=28, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=29, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=30, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=31, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=32, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=33, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=34, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=35, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=36, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=37, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=38, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=39, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=40, x={3:0}, x={3:0}] [L17] COND FALSE !(i < 40) [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={3:0}] [L49] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=7, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=8, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=9, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=10, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=11, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=12, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=13, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=14, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=15, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=16, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=17, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=18, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=19, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=20, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=21, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=1, i=22, ret=95, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=2, i=23, ret=82, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=3, i=24, ret=176, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=4, i=25, ret=-661, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=5, i=26, ret=-663, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=6, i=27, ret=-680, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=7, i=28, ret=-696, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=8, i=29, ret=-716, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=9, i=30, ret=-728, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=10, i=31, ret=-742, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=11, i=32, ret=-751, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=12, i=33, ret=-762, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=13, i=34, ret=1073742191, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=14, i=35, ret=2147485146, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=15, i=36, ret=2147485220, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=16, i=37, ret=2147485295, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=17, i=38, ret=2147484452, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=18, i=39, ret=2147484442, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=19, i=40, ret=2147483645, x={3:0}, x={3:0}, x[i]=0] [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L49] RET, EXPR rangesum(x) VAL [rangesum(x)=113025455, x={3:0}] [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 VAL [ret=113025455, temp=-9, x={3:0}] [L52] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=7, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=8, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=9, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=10, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=11, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=12, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=13, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=14, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=15, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=16, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=17, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=18, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=19, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=20, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=21, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=1, i=22, ret=95, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=2, i=23, ret=82, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=3, i=24, ret=176, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=4, i=25, ret=-661, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=5, i=26, ret=-663, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=6, i=27, ret=-680, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=7, i=28, ret=-696, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=8, i=29, ret=-716, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=9, i=30, ret=-728, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=10, i=31, ret=-742, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=11, i=32, ret=-751, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=12, i=33, ret=-762, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=13, i=34, ret=1073742191, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=14, i=35, ret=2147485146, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=15, i=36, ret=2147485220, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=16, i=37, ret=2147485295, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=17, i=38, ret=2147484452, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=18, i=39, ret=2147484442, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=19, i=40, ret=2147483645, x={3:0}, x={3:0}, x[i]=0] [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L52] RET, EXPR rangesum(x) VAL [rangesum(x)=113025455, ret=113025455, temp=-9, x={3:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=5, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=6, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=7, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=8, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=9, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=10, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=11, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=12, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=13, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=14, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=15, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=16, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=17, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=18, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=19, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=20, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=21, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=22, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=23, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=24, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=25, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=26, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=27, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=28, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=29, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=30, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=31, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=32, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=33, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=34, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=35, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=36, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=37, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=38, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=39, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND FALSE !(i<40 -1) [L57] x[40 -1] = temp VAL [i=39, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L58] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=7, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=8, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=9, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=10, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=11, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=12, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=13, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=14, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=15, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=16, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=17, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=18, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=19, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=20, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=21, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=1, i=22, ret=-13, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=2, i=23, ret=81, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=3, i=24, ret=-756, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=4, i=25, ret=-758, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=5, i=26, ret=-775, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=6, i=27, ret=-791, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=7, i=28, ret=-811, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=8, i=29, ret=-823, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=9, i=30, ret=-837, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=10, i=31, ret=-846, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=11, i=32, ret=-857, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=12, i=33, ret=1073742096, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=13, i=34, ret=2147485051, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=14, i=35, ret=2147485125, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=15, i=36, ret=2147485200, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=16, i=37, ret=2147484357, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=17, i=38, ret=2147484347, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=18, i=39, ret=2147483550, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=19, i=40, ret=2147482715, x={3:0}, x={3:0}, x[i]=0] [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L58] RET, EXPR rangesum(x) VAL [i=39, rangesum(x)=113025406, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [i=39, ret=113025455, ret2=113025455, ret5=113025406, temp=-835, x={3:0}] [L61] reach_error() VAL [i=39, ret=113025455, ret2=113025455, ret5=113025406, temp=-835, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 778.2s, OverallIterations: 16, TraceHistogramMax: 120, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.1s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 692 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 511 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 592 IncrementalHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 181 mSDtfsCounter, 592 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3170 GetRequests, 2765 SyntacticMatches, 31 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4730 ImplicationChecksByTransitivity, 16.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=15, InterpolantAutomatonStates: 260, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 318.8s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 1418 NumberOfCodeBlocks, 1189 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 2126 ConstructedInterpolants, 0 QuantifiedInterpolants, 2624 SizeOfPredicates, 0 NumberOfNonLiveVariables, 5616 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 46751/50021 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! [2022-11-19 06:57:05,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54f08c9-fdf9-4090-9a21-dfdea612990b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE