./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/sum10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sum10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V --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 f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:52:37,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:52:37,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:52:37,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:52:37,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:52:37,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:52:37,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:52:37,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:52:37,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:52:37,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:52:37,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:52:37,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:52:37,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:52:37,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:52:37,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:52:37,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:52:37,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:52:37,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:52:37,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:52:37,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:52:37,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:52:37,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:52:37,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:52:37,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:52:37,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:52:37,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:52:37,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:52:37,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:52:37,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:52:37,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:52:37,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:52:37,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:52:37,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:52:37,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:52:37,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:52:37,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:52:37,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:52:37,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:52:37,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:52:37,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:52:37,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:52:37,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 01:52:37,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:52:37,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:52:37,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:52:37,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:52:37,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:52:37,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:52:37,340 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:52:37,340 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:52:37,341 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:52:37,341 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:52:37,341 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:52:37,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:52:37,342 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:52:37,342 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:52:37,342 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:52:37,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:52:37,351 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:52:37,351 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:52:37,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:52:37,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:52:37,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:52:37,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:52:37,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:52:37,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:52:37,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:52:37,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:52:37,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:52:37,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:52:37,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:52:37,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:52:37,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:52:37,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:52:37,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:52:37,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:52:37,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:52:37,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:52:37,358 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:52:37,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:52:37,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:52:37,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:52:37,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:52:37,362 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 [2021-11-23 01:52:37,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:52:37,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:52:37,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:52:37,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:52:37,772 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:52:37,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/reducercommutativity/sum10-1.i [2021-11-23 01:52:37,862 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/data/9bb8b91e7/f8f9d6b1099e45188de102ceae3ed621/FLAGf13fc6cf3 [2021-11-23 01:52:38,387 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:52:38,388 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/sv-benchmarks/c/reducercommutativity/sum10-1.i [2021-11-23 01:52:38,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/data/9bb8b91e7/f8f9d6b1099e45188de102ceae3ed621/FLAGf13fc6cf3 [2021-11-23 01:52:38,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/data/9bb8b91e7/f8f9d6b1099e45188de102ceae3ed621 [2021-11-23 01:52:38,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:52:38,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:52:38,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:52:38,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:52:38,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:52:38,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:38" (1/1) ... [2021-11-23 01:52:38,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63507954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:38, skipping insertion in model container [2021-11-23 01:52:38,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:38" (1/1) ... [2021-11-23 01:52:38,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:52:38,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:52:39,081 WARN L230 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_92a85731-1f43-4a3a-98ba-33f1db94632d/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2021-11-23 01:52:39,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:52:39,097 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:52:39,119 WARN L230 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_92a85731-1f43-4a3a-98ba-33f1db94632d/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2021-11-23 01:52:39,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:52:39,139 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:52:39,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39 WrapperNode [2021-11-23 01:52:39,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:52:39,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:52:39,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:52:39,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:52:39,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,206 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2021-11-23 01:52:39,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:52:39,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:52:39,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:52:39,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:52:39,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:52:39,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:52:39,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:52:39,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:52:39,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (1/1) ... [2021-11-23 01:52:39,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:52:39,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:39,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:52:39,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:52:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:52:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-11-23 01:52:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-11-23 01:52:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:52:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:52:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:52:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:52:39,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:52:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:52:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:52:39,462 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:52:39,464 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:52:39,695 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:52:39,745 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:52:39,746 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 01:52:39,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:39 BoogieIcfgContainer [2021-11-23 01:52:39,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:52:39,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:52:39,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:52:39,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:52:39,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:38" (1/3) ... [2021-11-23 01:52:39,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331ba707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:39, skipping insertion in model container [2021-11-23 01:52:39,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39" (2/3) ... [2021-11-23 01:52:39,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331ba707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:39, skipping insertion in model container [2021-11-23 01:52:39,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:39" (3/3) ... [2021-11-23 01:52:39,760 INFO L111 eAbstractionObserver]: Analyzing ICFG sum10-1.i [2021-11-23 01:52:39,766 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:52:39,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:52:39,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:52:39,858 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:52:39,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:52:39,877 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) [2021-11-23 01:52:39,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 01:52:39,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:39,884 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:39,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:39,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash -93755173, now seen corresponding path program 1 times [2021-11-23 01:52:39,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:39,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332063786] [2021-11-23 01:52:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:39,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 01:52:40,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:40,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332063786] [2021-11-23 01:52:40,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332063786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:40,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:40,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:40,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781720975] [2021-11-23 01:52:40,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:40,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:40,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:40,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:40,229 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), 3 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) [2021-11-23 01:52:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:40,275 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-23 01:52:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:40,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-11-23 01:52:40,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:40,286 INFO L225 Difference]: With dead ends: 33 [2021-11-23 01:52:40,286 INFO L226 Difference]: Without dead ends: 16 [2021-11-23 01:52:40,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:40,295 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 18 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 [2021-11-23 01:52:40,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-23 01:52:40,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-23 01:52:40,340 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) [2021-11-23 01:52:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-23 01:52:40,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2021-11-23 01:52:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:40,343 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-23 01:52:40,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-11-23 01:52:40,362 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-23 01:52:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 01:52:40,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:40,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:40,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:52:40,366 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:40,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash 3079074, now seen corresponding path program 1 times [2021-11-23 01:52:40,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:40,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50238752] [2021-11-23 01:52:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:40,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 01:52:40,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:40,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50238752] [2021-11-23 01:52:40,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50238752] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:40,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861015121] [2021-11-23 01:52:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:40,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:40,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:40,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:40,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:52:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:40,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 01:52:40,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 01:52:40,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:52:40,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861015121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:40,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 01:52:40,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 01:52:40,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929976807] [2021-11-23 01:52:40,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:40,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:40,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:40,743 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) [2021-11-23 01:52:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:40,766 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-23 01:52:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:40,767 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 [2021-11-23 01:52:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:40,768 INFO L225 Difference]: With dead ends: 29 [2021-11-23 01:52:40,769 INFO L226 Difference]: Without dead ends: 17 [2021-11-23 01:52:40,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:40,771 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 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 [2021-11-23 01:52:40,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-23 01:52:40,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-23 01:52:40,777 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) [2021-11-23 01:52:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-23 01:52:40,779 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-23 01:52:40,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:40,779 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-23 01:52:40,780 INFO L471 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) [2021-11-23 01:52:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-23 01:52:40,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 01:52:40,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:40,782 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:40,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:41,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-23 01:52:41,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:41,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1452369158, now seen corresponding path program 1 times [2021-11-23 01:52:41,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:41,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052591054] [2021-11-23 01:52:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:41,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 01:52:41,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:41,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052591054] [2021-11-23 01:52:41,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052591054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:41,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131335467] [2021-11-23 01:52:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:41,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:41,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:41,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 01:52:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:41,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 01:52:41,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 01:52:41,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:52:41,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131335467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:41,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 01:52:41,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 01:52:41,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633364039] [2021-11-23 01:52:41,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:41,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:41,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:41,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:41,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:41,322 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) [2021-11-23 01:52:41,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:41,360 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-23 01:52:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:41,362 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 [2021-11-23 01:52:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:41,363 INFO L225 Difference]: With dead ends: 27 [2021-11-23 01:52:41,364 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 01:52:41,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:41,368 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 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 [2021-11-23 01:52:41,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 01:52:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-23 01:52:41,385 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) [2021-11-23 01:52:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-23 01:52:41,390 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2021-11-23 01:52:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:41,393 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-23 01:52:41,394 INFO L471 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) [2021-11-23 01:52:41,394 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-23 01:52:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 01:52:41,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:41,397 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:41,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:41,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:41,612 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1362806936, now seen corresponding path program 1 times [2021-11-23 01:52:41,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:41,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8144397] [2021-11-23 01:52:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:41,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 01:52:41,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:41,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8144397] [2021-11-23 01:52:41,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8144397] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:41,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770194759] [2021-11-23 01:52:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:41,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:41,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:41,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:41,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 01:52:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:41,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:52:41,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 01:52:41,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 01:52:41,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770194759] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:52:41,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [937749646] [2021-11-23 01:52:41,996 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 01:52:41,997 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:52:42,002 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:52:42,009 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:52:42,010 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:52:42,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:42,158 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 01:52:42,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:42,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:42,192 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 01:52:42,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:42,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:42,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 36 [2021-11-23 01:52:42,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:42,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:42,415 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-23 01:52:42,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 198 treesize of output 197 [2021-11-23 01:52:42,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 21 [2021-11-23 01:52:42,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:42,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:43,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:43,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:43,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:43,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:43,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:43,115 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-23 01:52:43,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:43,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:43,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:43,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:43,506 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 12 for LOIs [2021-11-23 01:52:43,570 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:52:48,597 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (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|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 10 |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 01:52:48,597 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:52:48,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:52:48,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2021-11-23 01:52:48,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37235375] [2021-11-23 01:52:48,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:52:48,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 01:52:48,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 01:52:48,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2021-11-23 01:52:48,601 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-11-23 01:52:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:48,652 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-23 01:52:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 01:52:48,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 [2021-11-23 01:52:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:48,655 INFO L225 Difference]: With dead ends: 36 [2021-11-23 01:52:48,655 INFO L226 Difference]: Without dead ends: 21 [2021-11-23 01:52:48,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2021-11-23 01:52:48,667 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:48,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-23 01:52:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-23 01:52:48,679 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) [2021-11-23 01:52:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-23 01:52:48,682 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2021-11-23 01:52:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:48,682 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-23 01:52:48,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-11-23 01:52:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-23 01:52:48,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 01:52:48,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:48,686 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:48,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-23 01:52:48,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:48,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:48,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:48,900 INFO L85 PathProgramCache]: Analyzing trace with hash -289862895, now seen corresponding path program 2 times [2021-11-23 01:52:48,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:48,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027358342] [2021-11-23 01:52:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:48,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 01:52:49,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027358342] [2021-11-23 01:52:49,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027358342] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178891826] [2021-11-23 01:52:49,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 01:52:49,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:49,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:49,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:49,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 01:52:49,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 01:52:49,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 01:52:49,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:52:49,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 01:52:49,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 01:52:49,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178891826] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:52:49,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [995695806] [2021-11-23 01:52:49,276 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 01:52:49,276 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:52:49,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:52:49,277 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:52:49,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:52:49,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,336 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 01:52:49,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:49,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:49,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 41 [2021-11-23 01:52:49,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,475 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-23 01:52:49,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 208 treesize of output 196 [2021-11-23 01:52:49,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 21 [2021-11-23 01:52:49,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:49,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:49,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:49,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,860 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-23 01:52:49,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:49,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:49,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:49,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:50,100 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 12 for LOIs [2021-11-23 01:52:50,140 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:52:57,120 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (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|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 01:52:57,120 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:52:57,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:52:57,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 01:52:57,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785826359] [2021-11-23 01:52:57,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:52:57,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 01:52:57,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:57,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 01:52:57,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2021-11-23 01:52:57,122 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 01:52:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:57,155 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-23 01:52:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 01:52:57,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2021-11-23 01:52:57,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:57,157 INFO L225 Difference]: With dead ends: 38 [2021-11-23 01:52:57,157 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 01:52:57,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2021-11-23 01:52:57,159 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:57,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 01:52:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-23 01:52:57,164 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) [2021-11-23 01:52:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-23 01:52:57,166 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2021-11-23 01:52:57,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:57,166 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-23 01:52:57,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 01:52:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-23 01:52:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 01:52:57,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:57,168 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:57,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:57,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:57,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:57,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:57,389 INFO L85 PathProgramCache]: Analyzing trace with hash 635166223, now seen corresponding path program 3 times [2021-11-23 01:52:57,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:57,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821829086] [2021-11-23 01:52:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:57,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-23 01:52:57,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:57,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821829086] [2021-11-23 01:52:57,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821829086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:57,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749882311] [2021-11-23 01:52:57,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 01:52:57,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:57,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:57,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 01:52:57,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 01:52:57,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 01:52:57,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 01:52:57,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 01:52:57,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 01:52:57,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749882311] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:52:57,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742965127] [2021-11-23 01:52:57,887 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 01:52:57,888 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:52:57,888 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:52:57,888 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:52:57,888 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:52:57,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:57,927 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 01:52:57,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:57,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:57,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:57,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:57,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 41 [2021-11-23 01:52:58,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,048 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-23 01:52:58,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 208 treesize of output 196 [2021-11-23 01:52:58,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 21 [2021-11-23 01:52:58,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:58,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:58,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:58,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,405 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-23 01:52:58,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:58,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:58,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:58,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:52:58,618 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 12 for LOIs [2021-11-23 01:52:58,659 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:53:05,586 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (exists ((v_sum_~ret~0_BEFORE_RETURN_17 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_sum_~ret~0_BEFORE_RETURN_17 4294967296) 2147483647) (mod v_sum_~ret~0_BEFORE_RETURN_17 4294967296) (+ (mod v_sum_~ret~0_BEFORE_RETURN_17 4294967296) (- 4294967296))))) (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (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|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 01:53:05,586 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:53:05,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:53:05,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-11-23 01:53:05,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454276340] [2021-11-23 01:53:05,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:53:05,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 01:53:05,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:53:05,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 01:53:05,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-11-23 01:53:05,589 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 01:53:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:05,645 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2021-11-23 01:53:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 01:53:05,646 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37 [2021-11-23 01:53:05,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:05,647 INFO L225 Difference]: With dead ends: 48 [2021-11-23 01:53:05,647 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 01:53:05,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-11-23 01:53:05,648 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:05,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:53:05,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 01:53:05,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-23 01:53:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 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) [2021-11-23 01:53:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-23 01:53:05,654 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2021-11-23 01:53:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:05,655 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-23 01:53:05,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 01:53:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-23 01:53:05,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 01:53:05,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:05,657 INFO L514 BasicCegarLoop]: trace histogram [30, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:05,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:05,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 01:53:05,883 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:53:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash 581457627, now seen corresponding path program 4 times [2021-11-23 01:53:05,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:53:05,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008284155] [2021-11-23 01:53:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:05,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-23 01:53:06,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:53:06,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008284155] [2021-11-23 01:53:06,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008284155] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:53:06,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658479197] [2021-11-23 01:53:06,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 01:53:06,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:53:06,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:53:06,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:53:06,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 01:53:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:06,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 01:53:06,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-23 01:53:06,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-23 01:53:06,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658479197] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:53:06,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1952412291] [2021-11-23 01:53:06,330 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 01:53:06,331 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:53:06,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:53:06,331 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:53:06,331 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:53:06,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,367 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 01:53:06,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:06,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,394 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 01:53:06,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:06,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 41 [2021-11-23 01:53:06,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,500 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-23 01:53:06,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 208 treesize of output 196 [2021-11-23 01:53:06,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 21 [2021-11-23 01:53:06,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:06,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:06,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:06,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,758 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-23 01:53:06,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:06,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:06,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:06,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:06,958 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 12 for LOIs [2021-11-23 01:53:06,999 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:53:11,721 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1632#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (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|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 01:53:11,721 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:53:11,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:53:11,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2021-11-23 01:53:11,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025620939] [2021-11-23 01:53:11,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:53:11,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 01:53:11,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:53:11,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 01:53:11,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=512, Unknown=1, NotChecked=0, Total=650 [2021-11-23 01:53:11,723 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-11-23 01:53:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:11,778 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2021-11-23 01:53:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 01:53:11,779 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 56 [2021-11-23 01:53:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:11,780 INFO L225 Difference]: With dead ends: 62 [2021-11-23 01:53:11,780 INFO L226 Difference]: Without dead ends: 37 [2021-11-23 01:53:11,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=137, Invalid=512, Unknown=1, NotChecked=0, Total=650 [2021-11-23 01:53:11,782 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:11,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:53:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-23 01:53:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-23 01:53:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-11-23 01:53:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-11-23 01:53:11,789 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2021-11-23 01:53:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:11,789 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-11-23 01:53:11,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-11-23 01:53:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-11-23 01:53:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 01:53:11,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:11,791 INFO L514 BasicCegarLoop]: trace histogram [30, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:11,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:11,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 01:53:11,995 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:53:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1620076923, now seen corresponding path program 5 times [2021-11-23 01:53:11,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:53:11,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048568846] [2021-11-23 01:53:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:11,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-11-23 01:53:12,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:53:12,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048568846] [2021-11-23 01:53:12,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048568846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:53:12,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592347790] [2021-11-23 01:53:12,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 01:53:12,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:53:12,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:53:12,163 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:53:12,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 01:53:12,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 01:53:12,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 01:53:12,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 01:53:12,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-11-23 01:53:12,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-11-23 01:53:12,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592347790] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:53:12,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2138738434] [2021-11-23 01:53:12,462 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 01:53:12,463 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:53:12,463 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:53:12,463 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:53:12,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:53:12,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,502 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 01:53:12,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:12,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,524 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 01:53:12,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:12,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 36 [2021-11-23 01:53:12,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:12,612 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-23 01:53:12,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 198 treesize of output 197 [2021-11-23 01:53:12,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 21 [2021-11-23 01:53:12,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:12,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:12,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,939 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-23 01:53:12,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:12,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:12,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:13,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:13,145 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 12 for LOIs [2021-11-23 01:53:13,178 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:53:15,873 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2195#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (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|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#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)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (exists ((v_sum_~ret~0_BEFORE_RETURN_29 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_sum_~ret~0_BEFORE_RETURN_29 4294967296) 2147483647) (mod v_sum_~ret~0_BEFORE_RETURN_29 4294967296) (+ (- 4294967296) (mod v_sum_~ret~0_BEFORE_RETURN_29 4294967296))))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 01:53:15,873 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:53:15,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:53:15,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-23 01:53:15,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080695674] [2021-11-23 01:53:15,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:53:15,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 01:53:15,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:53:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 01:53:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-11-23 01:53:15,876 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-11-23 01:53:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:15,908 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2021-11-23 01:53:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:53:15,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 62 [2021-11-23 01:53:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:15,909 INFO L225 Difference]: With dead ends: 59 [2021-11-23 01:53:15,909 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 01:53:15,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-11-23 01:53:15,911 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:15,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:53:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 01:53:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-23 01:53:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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) [2021-11-23 01:53:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-11-23 01:53:15,918 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 62 [2021-11-23 01:53:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:15,919 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-11-23 01:53:15,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-11-23 01:53:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-11-23 01:53:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 01:53:15,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:15,921 INFO L514 BasicCegarLoop]: trace histogram [30, 10, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:15,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:16,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:53:16,123 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:53:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:16,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1684113797, now seen corresponding path program 6 times [2021-11-23 01:53:16,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:53:16,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731566094] [2021-11-23 01:53:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:16,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-11-23 01:53:16,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:53:16,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731566094] [2021-11-23 01:53:16,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731566094] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:53:16,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188487309] [2021-11-23 01:53:16,274 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 01:53:16,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:53:16,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:53:16,275 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:53:16,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 01:53:16,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 01:53:16,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 01:53:16,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 01:53:16,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 246 proven. 21 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-11-23 01:53:16,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-11-23 01:53:16,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188487309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:53:16,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1705340143] [2021-11-23 01:53:16,645 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 01:53:16,645 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:53:16,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:53:16,646 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:53:16,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:53:16,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:16,679 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 01:53:16,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:16,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:16,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:16,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:16,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 36 [2021-11-23 01:53:16,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:16,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:16,768 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-23 01:53:16,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 198 treesize of output 197 [2021-11-23 01:53:16,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 21 [2021-11-23 01:53:16,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:16,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:17,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:17,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:17,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:17,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:17,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:17,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:17,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:17,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:17,104 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-23 01:53:17,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:17,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:17,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:17,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:17,288 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 12 for LOIs [2021-11-23 01:53:17,317 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:53:18,029 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2789#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (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|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((v_sum_~ret~0_BEFORE_RETURN_35 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_sum_~ret~0_BEFORE_RETURN_35 4294967296) 2147483647) (mod v_sum_~ret~0_BEFORE_RETURN_35 4294967296) (+ (mod v_sum_~ret~0_BEFORE_RETURN_35 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 01:53:18,029 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:53:18,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:53:18,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-11-23 01:53:18,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447427146] [2021-11-23 01:53:18,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:53:18,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 01:53:18,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:53:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 01:53:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-11-23 01:53:18,032 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2021-11-23 01:53:18,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:18,078 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-11-23 01:53:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 01:53:18,079 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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 66 [2021-11-23 01:53:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:18,080 INFO L225 Difference]: With dead ends: 62 [2021-11-23 01:53:18,081 INFO L226 Difference]: Without dead ends: 44 [2021-11-23 01:53:18,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-11-23 01:53:18,082 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:18,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:53:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-23 01:53:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-23 01:53:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 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) [2021-11-23 01:53:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-11-23 01:53:18,089 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 66 [2021-11-23 01:53:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:18,090 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-11-23 01:53:18,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2021-11-23 01:53:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-11-23 01:53:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 01:53:18,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:18,092 INFO L514 BasicCegarLoop]: trace histogram [30, 10, 9, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:18,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-23 01:53:18,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:53:18,299 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:53:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash -320545617, now seen corresponding path program 7 times [2021-11-23 01:53:18,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:53:18,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062034799] [2021-11-23 01:53:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:18,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 0 proven. 617 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 01:53:28,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:53:28,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062034799] [2021-11-23 01:53:28,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062034799] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:53:28,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696229787] [2021-11-23 01:53:28,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 01:53:28,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:53:28,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:53:28,663 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:53:28,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a85731-1f43-4a3a-98ba-33f1db94632d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 01:53:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:29,521 WARN L261 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 234 conjunts are in the unsatisfiable core [2021-11-23 01:53:29,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:29,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:29,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:29,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:29,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:29,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:29,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:29,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:53:29,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 22 [2021-11-23 01:53:32,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1091 treesize of output 796 [2021-11-23 01:53:32,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:32,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 197 [2021-11-23 01:53:36,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:36,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:36,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:36,760 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-23 01:53:36,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 477 treesize of output 212 [2021-11-23 01:53:37,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,119 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:53:37,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 454 treesize of output 189 [2021-11-23 01:53:37,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,449 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:53:37,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 444 treesize of output 189 [2021-11-23 01:53:37,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:37,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:37,734 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-23 01:53:37,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 449 treesize of output 212 [2021-11-23 01:53:38,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:38,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,054 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-23 01:53:38,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 452 treesize of output 215 [2021-11-23 01:53:38,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,370 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:53:38,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 444 treesize of output 189 [2021-11-23 01:53:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:38,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:53:38,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,693 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-23 01:53:38,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 449 treesize of output 212 [2021-11-23 01:53:38,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:38,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,010 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:53:39,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 444 treesize of output 189 [2021-11-23 01:53:39,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,443 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:53:39,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 444 treesize of output 189 [2021-11-23 01:53:39,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:53:39,806 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:53:39,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 438 treesize of output 189 [2021-11-23 01:53:42,037 INFO L354 Elim1Store]: treesize reduction 1472, result has 2.1 percent of original size [2021-11-23 01:53:42,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 45 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 751 treesize of output 229 [2021-11-23 01:53:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-23 01:53:42,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:54:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 2 proven. 540 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-23 01:54:24,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696229787] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:54:24,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2127377616] [2021-11-23 01:54:24,869 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 01:54:24,869 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:54:24,870 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:54:24,870 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:54:24,870 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:54:24,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:24,904 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 01:54:24,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:54:24,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:24,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:54:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:24,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 36 [2021-11-23 01:54:24,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:24,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:54:25,006 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-23 01:54:25,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 198 treesize of output 197 [2021-11-23 01:54:25,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 21 [2021-11-23 01:54:25,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:25,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:54:25,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:25,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:54:25,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:25,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:25,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:25,353 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-23 01:54:25,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:54:25,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:54:25,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:54:25,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 01:54:25,579 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 12 for LOIs [2021-11-23 01:54:25,612 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:54:35,898 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3504#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (exists ((v_sum_~ret~0_BEFORE_RETURN_41 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_sum_~ret~0_BEFORE_RETURN_41 4294967296) 2147483647) (mod v_sum_~ret~0_BEFORE_RETURN_41 4294967296) (+ (mod v_sum_~ret~0_BEFORE_RETURN_41 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (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|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 01:54:35,898 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:54:35,898 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:54:35,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 41, 31] total 103 [2021-11-23 01:54:35,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464735677] [2021-11-23 01:54:35,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:54:35,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-23 01:54:35,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:35,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-23 01:54:35,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=12883, Unknown=0, NotChecked=0, Total=13340 [2021-11-23 01:54:35,909 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 103 states, 94 states have (on average 1.1063829787234043) internal successors, (104), 96 states have internal predecessors, (104), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-23 02:00:49,844 WARN L227 SmtUtils]: Spent 5.89m on a formula simplification. DAG size of input: 268 DAG size of output: 245 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:01:17,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []