./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG --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 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:30:53,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:30:53,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:30:53,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:30:53,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:30:53,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:30:53,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:30:53,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:30:53,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:30:53,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:30:53,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:30:53,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:30:53,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:30:53,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:30:53,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:30:53,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:30:53,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:30:53,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:30:53,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:30:53,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:30:53,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:30:53,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:30:53,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:30:53,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:30:53,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:30:53,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:30:53,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:30:53,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:30:53,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:30:53,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:30:53,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:30:53,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:30:53,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:30:53,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:30:53,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:30:53,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:30:53,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:30:53,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:30:53,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:30:53,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:30:53,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:30:53,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:30:53,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:30:53,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:30:53,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:30:53,357 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:30:53,358 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:30:53,358 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:30:53,358 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:30:53,359 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:30:53,359 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:30:53,359 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:30:53,364 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:30:53,364 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:30:53,364 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:30:53,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:30:53,365 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:30:53,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:30:53,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:30:53,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:30:53,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:30:53,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:30:53,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:30:53,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:30:53,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:30:53,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:30:53,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:30:53,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:30:53,367 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:30:53,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:30:53,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:30:53,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:30:53,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:30:53,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:30:53,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:30:53,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:30:53,368 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:30:53,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:30:53,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:30:53,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:30:53,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:30:53,369 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_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 [2021-10-29 05:30:53,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:30:53,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:30:53,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:30:53,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:30:53,816 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:30:53,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2021-10-29 05:30:53,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/data/33bde33be/d14860674f534ec5865b404999f03862/FLAG3364581db [2021-10-29 05:30:54,591 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:30:54,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2021-10-29 05:30:54,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/data/33bde33be/d14860674f534ec5865b404999f03862/FLAG3364581db [2021-10-29 05:30:54,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/data/33bde33be/d14860674f534ec5865b404999f03862 [2021-10-29 05:30:54,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:30:54,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:30:54,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:30:54,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:30:54,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:30:54,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:54,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a57f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54, skipping insertion in model container [2021-10-29 05:30:54,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:54,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:30:54,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:30:54,869 WARN L228 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_3309e39f-0755-4100-97a8-e3d5e1077abe/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2021-10-29 05:30:54,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:30:54,908 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:30:54,924 WARN L228 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_3309e39f-0755-4100-97a8-e3d5e1077abe/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2021-10-29 05:30:54,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:30:54,945 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:30:54,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54 WrapperNode [2021-10-29 05:30:54,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:30:54,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:30:54,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:30:54,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:30:54,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:54,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:55,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:30:55,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:30:55,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:30:55,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:30:55,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:55,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:55,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:55,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:55,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:55,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:55,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:55,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:30:55,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:30:55,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:30:55,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:30:55,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (1/1) ... [2021-10-29 05:30:55,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:30:55,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:30:55,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:30:55,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:30:55,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:30:55,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:30:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:30:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:30:55,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:30:55,491 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 05:30:55,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:30:55 BoogieIcfgContainer [2021-10-29 05:30:55,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:30:55,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:30:55,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:30:55,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:30:55,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:30:54" (1/3) ... [2021-10-29 05:30:55,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d90152e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:30:55, skipping insertion in model container [2021-10-29 05:30:55,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:54" (2/3) ... [2021-10-29 05:30:55,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d90152e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:30:55, skipping insertion in model container [2021-10-29 05:30:55,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:30:55" (3/3) ... [2021-10-29 05:30:55,520 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_1-2.c [2021-10-29 05:30:55,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:30:55,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:30:55,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:30:55,633 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 [2021-10-29 05:30:55,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:30:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:30:55,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:30:55,653 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:30:55,654 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:30:55,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:30:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:30:55,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2005416, now seen corresponding path program 1 times [2021-10-29 05:30:55,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:30:55,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131277282] [2021-10-29 05:30:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:30:55,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:30:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:30:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:30:56,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:30:56,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131277282] [2021-10-29 05:30:56,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131277282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:30:56,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:30:56,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:30:56,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654595949] [2021-10-29 05:30:56,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:30:56,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:30:56,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:30:56,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:30:56,056 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:30:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:30:56,082 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-29 05:30:56,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:30:56,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 05:30:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:30:56,100 INFO L225 Difference]: With dead ends: 13 [2021-10-29 05:30:56,103 INFO L226 Difference]: Without dead ends: 6 [2021-10-29 05:30:56,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:30:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-29 05:30:56,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-29 05:30:56,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:30:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-29 05:30:56,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-10-29 05:30:56,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:30:56,150 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-29 05:30:56,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:30:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-29 05:30:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:30:56,151 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:30:56,151 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:30:56,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:30:56,153 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:30:56,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:30:56,161 INFO L85 PathProgramCache]: Analyzing trace with hash 62123654, now seen corresponding path program 1 times [2021-10-29 05:30:56,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:30:56,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304771863] [2021-10-29 05:30:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:30:56,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:30:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:30:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:30:56,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:30:56,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304771863] [2021-10-29 05:30:56,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304771863] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:30:56,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714004421] [2021-10-29 05:30:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:30:56,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:30:56,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:30:56,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:30:56,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:30:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:30:56,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:30:56,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:30:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:30:56,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:30:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:30:56,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714004421] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:30:56,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [923788023] [2021-10-29 05:30:56,915 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-29 05:30:56,916 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:30:56,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:30:56,943 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:30:56,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:30:56,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:56,998 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:57,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:30:57,002 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:57,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:30:57,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-29 05:30:57,036 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-29 05:30:57,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-29 05:30:57,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:30:57,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:30:57,075 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:30:57,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:57,132 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:57,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-29 05:30:57,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:30:57,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:30:57,190 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:30:57,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:57,226 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:30:57,235 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:30:57,237 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:119, output treesize:94 [2021-10-29 05:30:57,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-29 05:30:57,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:57,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:57,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:57,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:57,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:57,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:57,336 INFO L180 QuantifierPusher]: treesize reduction 30, result has 68.1 percent of original size [2021-10-29 05:30:57,363 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:57,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:30:57,372 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:57,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,376 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:57,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:30:57,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:30:57,405 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:57,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:57,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-29 05:30:57,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-29 05:30:57,475 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:30:57,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:30:57,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:30:57,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-29 05:30:57,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688145190] [2021-10-29 05:30:57,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:30:57,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:30:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:30:57,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:30:57,947 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:30:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:30:58,052 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-10-29 05:30:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:30:58,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-29 05:30:58,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:30:58,054 INFO L225 Difference]: With dead ends: 12 [2021-10-29 05:30:58,055 INFO L226 Difference]: Without dead ends: 9 [2021-10-29 05:30:58,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:30:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-29 05:30:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-29 05:30:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:30:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-29 05:30:58,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2021-10-29 05:30:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:30:58,060 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-29 05:30:58,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:30:58,060 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-29 05:30:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:30:58,061 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:30:58,061 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-29 05:30:58,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:30:58,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:30:58,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:30:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:30:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash -449060568, now seen corresponding path program 2 times [2021-10-29 05:30:58,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:30:58,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193919336] [2021-10-29 05:30:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:30:58,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:30:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:30:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:30:58,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:30:58,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193919336] [2021-10-29 05:30:58,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193919336] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:30:58,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362657029] [2021-10-29 05:30:58,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:30:58,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:30:58,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:30:58,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:30:58,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:30:58,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-29 05:30:58,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:30:58,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:30:58,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:30:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:30:59,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:30:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:30:59,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362657029] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:30:59,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1065919777] [2021-10-29 05:30:59,696 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-29 05:30:59,696 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:30:59,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:30:59,697 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:30:59,697 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:30:59,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,706 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:59,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:30:59,711 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:59,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:30:59,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-29 05:30:59,718 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-10-29 05:30:59,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-29 05:30:59,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:30:59,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:30:59,746 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:30:59,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:59,753 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:59,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-29 05:30:59,777 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:30:59,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:30:59,782 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:30:59,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:59,788 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,790 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:30:59,792 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:30:59,793 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:119, output treesize:94 [2021-10-29 05:30:59,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-29 05:30:59,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:59,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:59,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:59,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:59,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:59,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:30:59,856 INFO L180 QuantifierPusher]: treesize reduction 30, result has 68.1 percent of original size [2021-10-29 05:30:59,863 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:59,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:30:59,867 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:59,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,870 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:59,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:30:59,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:30:59,878 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:30:59,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:59,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 05:30:59,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 05:30:59,906 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:31:00,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:31:00,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:31:00,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-10-29 05:31:00,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137203113] [2021-10-29 05:31:00,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:31:00,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:00,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:31:00,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:31:00,321 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:31:02,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:02,036 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-10-29 05:31:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:31:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:31:02,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:02,038 INFO L225 Difference]: With dead ends: 18 [2021-10-29 05:31:02,038 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:31:02,039 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-10-29 05:31:02,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:31:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 05:31:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:31:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-29 05:31:02,044 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-10-29 05:31:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:02,045 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-29 05:31:02,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:31:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-29 05:31:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:31:02,046 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:02,046 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2021-10-29 05:31:02,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:31:02,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:31:02,273 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:31:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1365490584, now seen corresponding path program 3 times [2021-10-29 05:31:02,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:02,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806582789] [2021-10-29 05:31:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:02,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:31:02,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:02,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806582789] [2021-10-29 05:31:02,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806582789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:31:02,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823492786] [2021-10-29 05:31:02,844 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 05:31:02,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:31:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:31:02,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:31:02,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:31:02,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 05:31:02,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:31:02,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:31:02,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:31:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:31:03,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:31:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:31:05,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823492786] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:31:05,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2053039551] [2021-10-29 05:31:05,940 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-29 05:31:05,941 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:31:05,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:31:05,942 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:31:05,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:31:05,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:05,956 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:05,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:05,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:31:05,958 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:05,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:05,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:31:05,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-29 05:31:05,972 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-10-29 05:31:05,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:05,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:05,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:05,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-29 05:31:05,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:05,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:31:05,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:05,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:31:05,992 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:31:05,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:05,998 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-29 05:31:06,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:31:06,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:31:06,035 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:31:06,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:06,040 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:31:06,045 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:31:06,045 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:119, output treesize:94 [2021-10-29 05:31:06,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-29 05:31:06,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:06,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:06,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:06,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:06,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:06,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:06,101 INFO L180 QuantifierPusher]: treesize reduction 30, result has 68.1 percent of original size [2021-10-29 05:31:06,107 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:06,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:31:06,111 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:06,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,114 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:06,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:31:06,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:31:06,121 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:06,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:06,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 05:31:06,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 05:31:06,143 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:31:06,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:31:06,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:31:06,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2021-10-29 05:31:06,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297717367] [2021-10-29 05:31:06,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-29 05:31:06,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:06,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-29 05:31:06,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-10-29 05:31:06,687 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:31:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:47,627 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-10-29 05:31:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 05:31:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:31:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:47,630 INFO L225 Difference]: With dead ends: 30 [2021-10-29 05:31:47,630 INFO L226 Difference]: Without dead ends: 27 [2021-10-29 05:31:47,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=445, Invalid=957, Unknown=4, NotChecked=0, Total=1406 [2021-10-29 05:31:47,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-29 05:31:47,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-29 05:31:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:31:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-29 05:31:47,640 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-10-29 05:31:47,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:47,640 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-29 05:31:47,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:31:47,641 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-29 05:31:47,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 05:31:47,642 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:47,642 INFO L513 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2021-10-29 05:31:47,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:31:47,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:31:47,843 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:31:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash 941275880, now seen corresponding path program 4 times [2021-10-29 05:31:47,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:47,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379453578] [2021-10-29 05:31:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:47,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:31:49,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:49,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379453578] [2021-10-29 05:31:49,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379453578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:31:49,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334666212] [2021-10-29 05:31:49,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 05:31:49,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:31:49,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:31:49,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:31:49,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 05:31:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:49,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-29 05:31:49,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:31:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:31:51,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:31:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:31:57,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334666212] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:31:57,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2011975499] [2021-10-29 05:31:57,054 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-29 05:31:57,054 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:31:57,054 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:31:57,054 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:31:57,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:31:57,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,062 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:57,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:31:57,067 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:57,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:31:57,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-29 05:31:57,073 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-10-29 05:31:57,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-29 05:31:57,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:31:57,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:31:57,087 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:31:57,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:57,092 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:57,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-29 05:31:57,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:31:57,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:31:57,115 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:31:57,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:57,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:31:57,122 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:31:57,122 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:119, output treesize:94 [2021-10-29 05:31:57,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-29 05:31:57,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:57,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:57,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:57,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:57,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:57,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:31:57,156 INFO L180 QuantifierPusher]: treesize reduction 30, result has 68.1 percent of original size [2021-10-29 05:31:57,160 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:57,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:31:57,163 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:57,163 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,165 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:57,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:31:57,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:31:57,171 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:31:57,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:31:57,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 05:31:57,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 05:31:57,190 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:31:58,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:31:58,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:31:58,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2021-10-29 05:31:58,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240579422] [2021-10-29 05:31:58,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-29 05:31:58,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:58,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-29 05:31:58,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1973, Unknown=0, NotChecked=0, Total=2652 [2021-10-29 05:31:58,030 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:32:00,560 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (= (mod c_ULTIMATE.start_main_~y~0 2) 0)) (.cse1 (* c_ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse11 (<= (div (+ .cse1 96) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967294)) 4294967296) 1))) (.cse5 (<= (div (+ .cse1 78) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967276)) 4294967296) 1))) (.cse4 (<= (div (+ 76 .cse1) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967274)) 4294967296) 1))) (.cse6 (<= (div (+ .cse1 80) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967278)) 4294967296) 1))) (.cse2 (<= (div (+ 92 .cse1) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967290)) 4294967296) 1))) (.cse10 (<= (div (+ .cse1 82) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967280)) 4294967296) 1))) (.cse7 (<= (div (+ 88 .cse1) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967286)) 4294967296) 1))) (.cse13 (<= (div (+ .cse1 84) (- 4294967296)) (+ 1 (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967282)) 4294967296)))) (.cse9 (<= (div (+ .cse1 94) (- 4294967296)) (+ (div (+ (- 4294967292) c_ULTIMATE.start_main_~x~0) 4294967296) 1))) (.cse12 (<= (div (+ .cse1 90) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967288)) 4294967296) 1))) (.cse8 (<= (div (+ .cse1 86) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967284)) 4294967296) 1))) (.cse0 (not .cse3))) (and (or .cse0 (<= (div (+ .cse1 79) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967277)) 4294967296) 1))) (or .cse0 (<= (div (+ .cse1 85) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967283)) 4294967296) 1))) (or .cse0 (<= (div (+ .cse1 89) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967287)) 4294967296) 1))) (or .cse0 (<= (div (+ .cse1 87) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967285)) 4294967296) 1))) (<= (div (+ .cse1 54) (- 4294967296)) (+ (div (+ (- 4294967252) c_ULTIMATE.start_main_~x~0) 4294967296) 1)) (or .cse2 .cse3) .cse4 (or .cse5 .cse0) (or .cse0 .cse6) (or (<= (div (+ .cse1 72) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967270)) 4294967296) 1)) .cse3) (or (<= (div (+ 56 .cse1) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967254)) 4294967296) 1)) .cse3) (or .cse0 (<= (div (+ 77 .cse1) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967275)) 4294967296) 1))) (or .cse0 .cse7) (or .cse0 .cse8) (or .cse0 .cse9) (or .cse10 .cse3) (or (<= (div (+ .cse1 62) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967260)) 4294967296) 1)) .cse3) (or .cse11 .cse0) (or (<= (div (+ .cse1 68) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967266)) 4294967296) 1)) .cse3) (or .cse3 (<= (div (+ .cse1 64) (- 4294967296)) (+ (div (+ (- 4294967262) c_ULTIMATE.start_main_~x~0) 4294967296) 1))) (or .cse11 .cse3) (or .cse0 (<= (div (+ .cse1 95) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967293)) 4294967296) 1))) (or .cse12 .cse0) (or .cse5 .cse3) (or .cse3 (<= (div (+ 66 .cse1) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967264)) 4294967296) 1))) (or .cse4 .cse3) (or .cse0 .cse13) (or .cse0 (<= (div (+ .cse1 93) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967291)) 4294967296) 1))) (or .cse6 .cse3) (or .cse0 .cse2) (< (mod c_ULTIMATE.start_main_~x~0 4294967296) 99) (or .cse0 (<= (div (+ .cse1 81) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967279)) 4294967296) 1))) (or (<= (div (+ .cse1 58) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967256)) 4294967296) 1)) .cse3) (or (<= (div (+ .cse1 60) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967258)) 4294967296) 1)) .cse3) (or .cse0 .cse10) (or .cse7 .cse3) (or (<= (div (+ .cse1 74) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967272)) 4294967296) 1)) .cse3) (or .cse3 (<= (div (+ .cse1 70) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967268)) 4294967296) 1))) (or .cse13 .cse3) (or .cse0 (<= (div (+ 97 .cse1) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967295)) 4294967296) 1))) (or .cse9 .cse3) (or .cse12 .cse3) (or (<= (div (+ 91 .cse1) (- 4294967296)) (+ (div (+ (- 4294967289) c_ULTIMATE.start_main_~x~0) 4294967296) 1)) .cse0) (or .cse8 .cse3) (or .cse0 (<= (div (+ .cse1 83) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967281)) 4294967296) 1)))))) is different from false [2021-10-29 05:32:39,139 WARN L207 SmtUtils]: Spent 23.53 s on a formula simplification. DAG size of input: 314 DAG size of output: 32 [2021-10-29 05:33:15,298 WARN L207 SmtUtils]: Spent 17.81 s on a formula simplification. DAG size of input: 296 DAG size of output: 32 [2021-10-29 05:33:58,713 WARN L207 SmtUtils]: Spent 17.71 s on a formula simplification. DAG size of input: 286 DAG size of output: 32 [2021-10-29 05:34:32,578 WARN L207 SmtUtils]: Spent 12.21 s on a formula simplification. DAG size of input: 268 DAG size of output: 32 [2021-10-29 05:35:16,360 WARN L207 SmtUtils]: Spent 13.51 s on a formula simplification. DAG size of input: 258 DAG size of output: 32 [2021-10-29 05:35:48,437 WARN L207 SmtUtils]: Spent 8.75 s on a formula simplification. DAG size of input: 240 DAG size of output: 32 [2021-10-29 05:36:20,599 WARN L207 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 230 DAG size of output: 32 [2021-10-29 05:36:57,061 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 212 DAG size of output: 32 [2021-10-29 05:37:37,702 WARN L207 SmtUtils]: Spent 12.05 s on a formula simplification. DAG size of input: 202 DAG size of output: 32 [2021-10-29 05:40:57,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:40:57,860 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2021-10-29 05:40:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-29 05:40:57,860 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-29 05:40:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:40:57,861 INFO L225 Difference]: With dead ends: 54 [2021-10-29 05:40:57,861 INFO L226 Difference]: Without dead ends: 51 [2021-10-29 05:40:57,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 29 SyntacticMatches, 21 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 543.1s TimeCoverageRelationStatistics Valid=1629, Invalid=3543, Unknown=88, NotChecked=142, Total=5402 [2021-10-29 05:40:57,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-29 05:40:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-29 05:40:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:40:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-10-29 05:40:57,889 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2021-10-29 05:40:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:40:57,889 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-10-29 05:40:57,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:40:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-10-29 05:40:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-29 05:40:57,892 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:40:57,892 INFO L513 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2021-10-29 05:40:57,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:40:58,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-29 05:40:58,096 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:40:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:40:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash -432117784, now seen corresponding path program 5 times [2021-10-29 05:40:58,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:40:58,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96699996] [2021-10-29 05:40:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:40:58,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:40:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:41:01,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:01,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96699996] [2021-10-29 05:41:01,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96699996] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:41:01,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363315598] [2021-10-29 05:41:01,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:41:01,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:41:01,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:41:01,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:41:01,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:41:02,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-29 05:41:02,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:41:02,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-29 05:41:02,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:41:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:41:06,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:41:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:41:32,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363315598] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:41:32,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [49618792] [2021-10-29 05:41:32,540 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-29 05:41:32,540 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:41:32,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:41:32,541 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:41:32,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:41:32,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,554 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:41:32,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:41:32,556 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:41:32,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:41:32,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-29 05:41:32,561 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-29 05:41:32,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-29 05:41:32,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:41:32,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:41:32,574 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:41:32,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:32,584 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:41:32,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-29 05:41:32,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:41:32,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:41:32,606 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:41:32,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:32,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:41:32,622 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:41:32,622 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:119, output treesize:94 [2021-10-29 05:41:32,625 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-29 05:41:32,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:32,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:32,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:32,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:32,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:32,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:32,690 INFO L180 QuantifierPusher]: treesize reduction 30, result has 68.1 percent of original size [2021-10-29 05:41:32,693 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:41:32,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:41:32,695 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:41:32,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,697 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:41:32,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:41:32,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:41:32,704 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:41:32,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:41:32,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 05:41:32,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 05:41:32,722 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:41:34,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:41:34,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:41:34,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 49] total 97 [2021-10-29 05:41:34,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663852500] [2021-10-29 05:41:34,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-10-29 05:41:34,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-10-29 05:41:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1516, Invalid=8584, Unknown=0, NotChecked=0, Total=10100 [2021-10-29 05:41:34,215 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:48,122 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~x~0 (- 1))) (.cse1 (mod c_ULTIMATE.start_main_~y~0 2))) (let ((.cse3 (div (+ (- 9) .cse0 .cse1) (- 2))) (.cse15 (div (+ .cse0 (- 29) .cse1) (- 2))) (.cse6 (div (+ (- 11) .cse0 .cse1) (- 2))) (.cse16 (<= (div (+ .cse0 70) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967268)) 4294967296) 1))) (.cse2 (<= (div (+ .cse0 90) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967288)) 4294967296) 1))) (.cse30 (div (+ .cse0 (- 25) .cse1) (- 2))) (.cse5 (<= (div (+ .cse0 84) (- 4294967296)) (+ 1 (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967282)) 4294967296)))) (.cse11 (<= (div (+ .cse0 86) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967284)) 4294967296) 1))) (.cse8 (<= (div (+ .cse0 54) (- 4294967296)) (+ (div (+ (- 4294967252) c_ULTIMATE.start_main_~x~0) 4294967296) 1))) (.cse24 (<= (div (+ .cse0 62) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967260)) 4294967296) 1))) (.cse23 (<= (div (+ .cse0 78) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967276)) 4294967296) 1))) (.cse9 (div (+ (- 45) .cse0 .cse1) (- 2))) (.cse17 (<= (div (+ 76 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967274)) 4294967296) 1))) (.cse13 (div (+ (- 23) .cse0 .cse1) (- 2))) (.cse33 (div (+ (- 37) .cse0 .cse1) (- 2))) (.cse21 (div (+ .cse0 (- 5) .cse1) (- 2))) (.cse28 (div (+ (- 27) .cse0 .cse1) (- 2))) (.cse29 (<= (div (+ .cse0 72) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967270)) 4294967296) 1))) (.cse31 (<= (div (+ .cse0 74) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967272)) 4294967296) 1))) (.cse36 (div (+ (- 17) .cse0 .cse1) (- 2))) (.cse18 (<= (div (+ .cse0 82) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967280)) 4294967296) 1))) (.cse38 (<= (div (+ 66 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967264)) 4294967296) 1))) (.cse27 (div (+ .cse0 (- 33) .cse1) (- 2))) (.cse37 (div (+ .cse0 (- 3) .cse1) (- 2))) (.cse7 (<= (div (+ 92 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967290)) 4294967296) 1))) (.cse14 (div (+ .cse0 (- 7) .cse1) (- 2))) (.cse40 (<= (div (+ .cse0 96) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967294)) 4294967296) 1))) (.cse35 (<= (div (+ .cse0 68) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967266)) 4294967296) 1))) (.cse34 (div (+ .cse0 .cse1 (- 21)) (- 2))) (.cse41 (div (+ .cse0 .cse1 (- 19)) (- 2))) (.cse39 (<= (div (+ .cse0 80) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967278)) 4294967296) 1))) (.cse19 (<= (div (+ .cse0 64) (- 4294967296)) (+ (div (+ (- 4294967262) c_ULTIMATE.start_main_~x~0) 4294967296) 1))) (.cse45 (div (+ .cse0 .cse1 (- 35)) (- 2))) (.cse25 (<= (div (+ .cse0 58) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967256)) 4294967296) 1))) (.cse20 (<= (div (+ 88 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967286)) 4294967296) 1))) (.cse12 (div (+ (- 13) .cse0 .cse1) (- 2))) (.cse10 (<= (div (+ 56 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967254)) 4294967296) 1))) (.cse44 (div (+ .cse0 .cse1 (- 43)) (- 2))) (.cse22 (<= (div (+ .cse0 94) (- 4294967296)) (+ (div (+ (- 4294967292) c_ULTIMATE.start_main_~x~0) 4294967296) 1))) (.cse4 (div (+ .cse0 (- 15) .cse1) (- 2))) (.cse26 (div (+ .cse0 (- 41) .cse1) (- 2))) (.cse42 (div (+ .cse0 (- 31) .cse1) (- 2))) (.cse32 (<= (div (+ .cse0 60) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967258)) 4294967296) 1))) (.cse43 (div (+ .cse0 .cse1 (- 39)) (- 2)))) (and (or (<= (div (+ .cse0 (- 75)) (- 2)) (div (+ .cse0 (- 75) .cse1) (- 2))) (<= (div (+ .cse0 24) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967222)) 4294967296) 1))) (or (<= (div (+ .cse0 (- 57)) (- 2)) (div (+ .cse0 (- 57) .cse1) (- 2))) (<= (div (+ .cse0 42) (- 4294967296)) (+ 1 (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967240)) 4294967296)))) (or .cse2 (<= (div (+ (- 9) .cse0) (- 2)) .cse3)) (or (<= (div (+ .cse0 (- 15)) (- 2)) .cse4) .cse5) (or (<= (div (+ .cse0 89) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967287)) 4294967296) 1)) (<= .cse3 (+ (div (+ c_ULTIMATE.start_main_~x~0 7) 2) 1))) (or (<= .cse6 (+ (div (+ c_ULTIMATE.start_main_~x~0 9) 2) 1)) (<= (div (+ .cse0 87) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967285)) 4294967296) 1))) (or .cse7 (<= (div (+ .cse0 (- 6) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 4) 2) 1))) (or .cse8 (<= (div (+ (- 45) .cse0) (- 2)) .cse9)) (or .cse10 (<= (div (+ .cse0 .cse1 (- 42)) (- 2)) (+ (div (+ 40 c_ULTIMATE.start_main_~x~0) 2) 1))) (or .cse11 (<= (div (+ (- 13) .cse0) (- 2)) .cse12)) (or (<= (div (+ .cse0 (- 85)) (- 2)) (div (+ .cse0 (- 85) .cse1) (- 2))) (<= (div (+ .cse0 14) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967212)) 4294967296) 1))) (or (<= (div (+ .cse0 75) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967273)) 4294967296) 1)) (<= .cse13 (+ (div (+ c_ULTIMATE.start_main_~x~0 21) 2) 1))) (or (<= (div (+ (- 1) .cse0 .cse1) (- 2)) (+ (div (+ (- 1) c_ULTIMATE.start_main_~x~0) 2) 1)) (<= (div (+ 97 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967295)) 4294967296) 1))) (or (<= (div (+ .cse0 (- 47)) (- 2)) (div (+ .cse0 (- 47) .cse1) (- 2))) (<= (div (+ .cse0 52) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967250)) 4294967296) 1))) (or (<= (div (+ 91 .cse0) (- 4294967296)) (+ (div (+ (- 4294967289) c_ULTIMATE.start_main_~x~0) 4294967296) 1)) (<= .cse14 (+ (div (+ c_ULTIMATE.start_main_~x~0 5) 2) 1))) (or (<= (div (+ .cse0 28) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967226)) 4294967296) 1)) (<= (div (+ .cse0 (- 71)) (- 2)) (div (+ .cse0 (- 71) .cse1) (- 2)))) (or (<= .cse15 (+ (div (+ c_ULTIMATE.start_main_~x~0 27) 2) 1)) (<= (div (+ .cse0 69) (- 4294967296)) (+ (div (+ (- 4294967267) c_ULTIMATE.start_main_~x~0) 4294967296) 1))) (or (<= (div (+ .cse0 (- 29)) (- 2)) .cse15) .cse16) (or (<= (div (+ .cse0 (- 91)) (- 2)) (div (+ .cse0 (- 91) .cse1) (- 2))) (<= (div (+ .cse0 8) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967206)) 4294967296) 1))) (or .cse17 (<= (div (+ .cse0 (- 22) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 20) 2) 1))) (or (<= (div (+ .cse0 16) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967214)) 4294967296) 1)) (<= (div (+ .cse0 (- 83)) (- 2)) (div (+ .cse0 .cse1 (- 83)) (- 2)))) (or .cse18 (<= (div (+ (- 16) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 14) 2) 1))) (or (<= (div (+ .cse0 (- 59)) (- 2)) (div (+ .cse0 (- 59) .cse1) (- 2))) (<= (div (+ 40 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967238)) 4294967296) 1))) (or .cse19 (<= (div (+ .cse0 (- 34) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 32) 2) 1))) (or (<= (div (+ (- 11) .cse0) (- 2)) .cse6) .cse20) (or (<= (div (+ (- 28) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 26) 2) 1)) .cse16) (or (<= (div (+ .cse0 .cse1 (- 8)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 6) 2) 1)) .cse2) (or (<= (div (+ .cse0 (- 5)) (- 2)) .cse21) .cse22) (or .cse23 (<= (div (+ (- 20) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 18) 2) 1))) (or (<= (div (+ (- 67) .cse0) (- 2)) (div (+ (- 67) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 32) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967230)) 4294967296) 1))) (or (<= (div (+ .cse0 18) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967216)) 4294967296) 1)) (<= (div (+ .cse0 (- 81)) (- 2)) (div (+ .cse0 (- 81) .cse1) (- 2)))) (or (<= (div (+ .cse0 (- 36) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 34) 2) 1)) .cse24) (or .cse25 (<= (div (+ .cse0 (- 41)) (- 2)) .cse26)) (or (<= (div (+ .cse0 65) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967263)) 4294967296) 1)) (<= .cse27 (+ (div (+ c_ULTIMATE.start_main_~x~0 31) 2) 1))) (or (<= (div (+ (- 89) .cse0) (- 2)) (div (+ (- 89) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 10) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967208)) 4294967296) 1))) (or (<= (div (+ (- 27) .cse0) (- 2)) .cse28) .cse29) (or (<= (div (+ .cse0 73) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967271)) 4294967296) 1)) (<= .cse30 (+ (div (+ 23 c_ULTIMATE.start_main_~x~0) 2) 1))) (or .cse31 (<= (div (+ .cse0 (- 25)) (- 2)) .cse30)) (or .cse5 (<= (div (+ (- 14) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 12) 2) 1))) (or .cse32 (<= (div (+ (- 38) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 36) 2) 1))) (or .cse11 (<= (div (+ .cse0 (- 12) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 10) 2) 1))) (or (<= (div (+ (- 49) .cse0) (- 2)) (div (+ (- 49) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 50) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967248)) 4294967296) 1))) (or .cse8 (<= (div (+ .cse0 (- 44) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 42) 2) 1))) (or (<= (div (+ (- 37) .cse0) (- 2)) .cse33) .cse24) (or .cse23 (<= (div (+ .cse0 (- 21)) (- 2)) .cse34)) (or (<= (div (+ 53 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967251)) 4294967296) 1)) (<= .cse9 (+ (div (+ c_ULTIMATE.start_main_~x~0 43) 2) 1))) (or .cse35 (<= (div (+ .cse0 .cse1 (- 30)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 28) 2) 1))) (or (<= (div (+ (- 63) .cse0) (- 2)) (div (+ (- 63) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 36) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967234)) 4294967296) 1))) (or .cse17 (<= (div (+ (- 23) .cse0) (- 2)) .cse13)) (or (<= (div (+ .cse0 61) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967259)) 4294967296) 1)) (<= .cse33 (+ (div (+ c_ULTIMATE.start_main_~x~0 35) 2) 1))) (or (<= (div (+ .cse0 81) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967279)) 4294967296) 1)) (<= .cse36 (+ (div (+ c_ULTIMATE.start_main_~x~0 15) 2) 1))) (or (<= .cse21 (+ (div (+ c_ULTIMATE.start_main_~x~0 3) 2) 1)) (<= (div (+ .cse0 93) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967291)) 4294967296) 1))) (or (<= .cse37 (+ (div (+ c_ULTIMATE.start_main_~x~0 1) 2) 1)) (<= (div (+ .cse0 95) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967293)) 4294967296) 1))) (< 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (or (<= (div (+ (- 53) .cse0) (- 2)) (div (+ (- 53) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 46) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967244)) 4294967296) 1))) (or (<= (div (+ .cse0 .cse1 (- 32)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 30) 2) 1)) .cse38) (or (= (mod c_ULTIMATE.start_main_~x~0 2) .cse1) (< (mod c_ULTIMATE.start_main_~x~0 4294967296) 99)) (or (<= (div (+ .cse0 71) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967269)) 4294967296) 1)) (<= .cse28 (+ (div (+ c_ULTIMATE.start_main_~x~0 25) 2) 1))) (or (<= (div (+ (- 26) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 24) 2) 1)) .cse29) (or .cse31 (<= (div (+ .cse0 .cse1 (- 24)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 22) 2) 1))) (or (<= (div (+ (- 79) .cse0) (- 2)) (div (+ (- 79) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 20) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967218)) 4294967296) 1))) (or (<= (div (+ (- 17) .cse0) (- 2)) .cse36) .cse18) (or (<= (div (+ .cse0 .cse1 (- 18)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 16) 2) 1)) .cse39) (or (<= (div (+ .cse0 26) (- 4294967296)) (+ (div (+ (- 4294967224) c_ULTIMATE.start_main_~x~0) 4294967296) 1)) (<= (div (+ .cse0 (- 73)) (- 2)) (div (+ .cse0 .cse1 (- 73)) (- 2)))) (or .cse38 (<= (div (+ .cse0 (- 33)) (- 2)) .cse27)) (or (<= (div (+ (- 87) .cse0) (- 2)) (div (+ (- 87) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 12) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967210)) 4294967296) 1))) (or .cse40 (<= (div (+ .cse0 (- 3)) (- 2)) .cse37)) (or .cse7 (<= (div (+ .cse0 (- 7)) (- 2)) .cse14)) (or .cse40 (<= (div (+ (- 2) .cse0 .cse1) (- 2)) (+ (div c_ULTIMATE.start_main_~x~0 2) 1))) (or (<= (div (+ .cse0 79) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967277)) 4294967296) 1)) (<= .cse41 (+ (div (+ c_ULTIMATE.start_main_~x~0 17) 2) 1))) (or .cse35 (<= (div (+ .cse0 (- 31)) (- 2)) .cse42)) (or (<= (div (+ .cse0 30) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967228)) 4294967296) 1)) (<= (div (+ (- 69) .cse0) (- 2)) (div (+ (- 69) .cse0 .cse1) (- 2)))) (or (<= (div (+ 77 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967275)) 4294967296) 1)) (<= .cse34 (+ (div (+ 19 c_ULTIMATE.start_main_~x~0) 2) 1))) (or (<= .cse43 (+ (div (+ c_ULTIMATE.start_main_~x~0 37) 2) 1)) (<= (div (+ .cse0 59) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967257)) 4294967296) 1))) (or (<= (div (+ .cse0 34) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967232)) 4294967296) 1)) (<= (div (+ .cse0 (- 65)) (- 2)) (div (+ .cse0 .cse1 (- 65)) (- 2)))) (or (<= (div (+ .cse0 (- 19)) (- 2)) .cse41) .cse39) (or (<= .cse44 (+ (div (+ 41 c_ULTIMATE.start_main_~x~0) 2) 1)) (<= (div (+ .cse0 55) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967253)) 4294967296) 1))) (or .cse19 (<= (div (+ .cse0 (- 35)) (- 2)) .cse45)) (or (<= .cse45 (+ (div (+ c_ULTIMATE.start_main_~x~0 33) 2) 1)) (<= (div (+ .cse0 63) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967261)) 4294967296) 1))) (or .cse25 (<= (div (+ .cse0 (- 40) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 38) 2) 1))) (or .cse20 (<= (div (+ .cse0 .cse1 (- 10)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 8) 2) 1))) (or (<= .cse12 (+ (div (+ c_ULTIMATE.start_main_~x~0 11) 2) 1)) (<= (div (+ .cse0 85) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967283)) 4294967296) 1))) (or (<= (div (+ .cse0 44) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967242)) 4294967296) 1)) (<= (div (+ (- 55) .cse0) (- 2)) (div (+ (- 55) .cse0 .cse1) (- 2)))) (or (<= (div (+ .cse0 (- 61)) (- 2)) (div (+ .cse0 (- 61) .cse1) (- 2))) (<= (div (+ .cse0 38) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967236)) 4294967296) 1))) (or (<= (div (+ (- 51) .cse0) (- 2)) (div (+ (- 51) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 48) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967246)) 4294967296) 1))) (or .cse10 (<= (div (+ .cse0 (- 43)) (- 2)) .cse44)) (or (<= (div (+ .cse0 22) (- 4294967296)) (+ (div (+ (- 4294967220) c_ULTIMATE.start_main_~x~0) 4294967296) 1)) (<= (div (+ (- 77) .cse0) (- 2)) (div (+ (- 77) .cse0 .cse1) (- 2)))) (or (<= (div (+ .cse0 (- 4) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 2) 2) 1)) .cse22) (or (<= .cse4 (+ (div (+ c_ULTIMATE.start_main_~x~0 13) 2) 1)) (<= (div (+ .cse0 83) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967281)) 4294967296) 1))) (or (<= .cse26 (+ (div (+ c_ULTIMATE.start_main_~x~0 39) 2) 1)) (<= (div (+ 57 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967255)) 4294967296) 1))) (or (<= (div (+ .cse0 67) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967265)) 4294967296) 1)) (<= .cse42 (+ (div (+ c_ULTIMATE.start_main_~x~0 29) 2) 1))) (or .cse32 (<= (div (+ .cse0 (- 39)) (- 2)) .cse43))))) is different from false [2021-10-29 05:41:58,019 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse5 (<= (div (+ .cse0 70) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967268)) 4294967296) 1))) (.cse2 (<= (div (+ .cse0 90) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967288)) 4294967296) 1))) (.cse4 (<= (div (+ .cse0 86) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967284)) 4294967296) 1))) (.cse3 (<= (div (+ .cse0 54) (- 4294967296)) (+ (div (+ (- 4294967252) c_ULTIMATE.start_main_~x~0) 4294967296) 1))) (.cse9 (<= (div (+ .cse0 62) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967260)) 4294967296) 1))) (.cse8 (<= (div (+ .cse0 78) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967276)) 4294967296) 1))) (.cse11 (<= (div (+ .cse0 74) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967272)) 4294967296) 1))) (.cse6 (<= (div (+ .cse0 82) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967280)) 4294967296) 1))) (.cse12 (<= (div (+ 66 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967264)) 4294967296) 1))) (.cse10 (<= (div (+ .cse0 58) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967256)) 4294967296) 1))) (.cse1 (mod c_ULTIMATE.start_main_~y~0 2)) (.cse7 (<= (div (+ .cse0 94) (- 4294967296)) (+ (div (+ (- 4294967292) c_ULTIMATE.start_main_~x~0) 4294967296) 1)))) (and (or (<= (div (+ .cse0 (- 57)) (- 2)) (div (+ .cse0 (- 57) .cse1) (- 2))) (<= (div (+ .cse0 42) (- 4294967296)) (+ 1 (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967240)) 4294967296)))) (or .cse2 (<= (div (+ (- 9) .cse0) (- 2)) (div (+ (- 9) .cse0 .cse1) (- 2)))) (or (<= (div (+ 92 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967290)) 4294967296) 1)) (<= (div (+ .cse0 (- 6) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 4) 2) 1))) (or .cse3 (<= (div (+ (- 45) .cse0) (- 2)) (div (+ (- 45) .cse0 .cse1) (- 2)))) (or (<= (div (+ 56 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967254)) 4294967296) 1)) (<= (div (+ .cse0 .cse1 (- 42)) (- 2)) (+ (div (+ 40 c_ULTIMATE.start_main_~x~0) 2) 1))) (or .cse4 (<= (div (+ (- 13) .cse0) (- 2)) (div (+ (- 13) .cse0 .cse1) (- 2)))) (or (<= (div (+ .cse0 (- 85)) (- 2)) (div (+ .cse0 (- 85) .cse1) (- 2))) (<= (div (+ .cse0 14) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967212)) 4294967296) 1))) (or (<= (div (+ .cse0 (- 29)) (- 2)) (div (+ .cse0 (- 29) .cse1) (- 2))) .cse5) (or (<= (div (+ 76 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967274)) 4294967296) 1)) (<= (div (+ .cse0 (- 22) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 20) 2) 1))) (or .cse6 (<= (div (+ (- 16) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 14) 2) 1))) (or (<= (div (+ .cse0 64) (- 4294967296)) (+ (div (+ (- 4294967262) c_ULTIMATE.start_main_~x~0) 4294967296) 1)) (<= (div (+ .cse0 (- 34) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 32) 2) 1))) (or (<= (div (+ (- 28) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 26) 2) 1)) .cse5) (or (<= (div (+ .cse0 .cse1 (- 8)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 6) 2) 1)) .cse2) (or (<= (div (+ .cse0 (- 5)) (- 2)) (div (+ .cse0 (- 5) .cse1) (- 2))) .cse7) (or .cse8 (<= (div (+ (- 20) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 18) 2) 1))) (or (<= (div (+ .cse0 18) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967216)) 4294967296) 1)) (<= (div (+ .cse0 (- 81)) (- 2)) (div (+ .cse0 (- 81) .cse1) (- 2)))) (or (<= (div (+ .cse0 (- 36) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 34) 2) 1)) .cse9) (or .cse10 (<= (div (+ .cse0 (- 41)) (- 2)) (div (+ .cse0 (- 41) .cse1) (- 2)))) (or (<= (div (+ (- 89) .cse0) (- 2)) (div (+ (- 89) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 10) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967208)) 4294967296) 1))) (or .cse11 (<= (div (+ .cse0 (- 25)) (- 2)) (div (+ .cse0 (- 25) .cse1) (- 2)))) (or (<= (div (+ .cse0 84) (- 4294967296)) (+ 1 (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967282)) 4294967296))) (<= (div (+ (- 14) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 12) 2) 1))) (or (<= (div (+ .cse0 60) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967258)) 4294967296) 1)) (<= (div (+ (- 38) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 36) 2) 1))) (or .cse4 (<= (div (+ .cse0 (- 12) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 10) 2) 1))) (or (<= (div (+ (- 49) .cse0) (- 2)) (div (+ (- 49) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 50) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967248)) 4294967296) 1))) (or .cse3 (<= (div (+ .cse0 (- 44) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 42) 2) 1))) (or (<= (div (+ (- 37) .cse0) (- 2)) (div (+ (- 37) .cse0 .cse1) (- 2))) .cse9) (or .cse8 (<= (div (+ .cse0 (- 21)) (- 2)) (div (+ .cse0 .cse1 (- 21)) (- 2)))) (or (<= (div (+ .cse0 68) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967266)) 4294967296) 1)) (<= (div (+ .cse0 .cse1 (- 30)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 28) 2) 1))) (< 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (or (<= (div (+ (- 53) .cse0) (- 2)) (div (+ (- 53) .cse0 .cse1) (- 2))) (<= (div (+ .cse0 46) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967244)) 4294967296) 1))) (or (<= (div (+ .cse0 .cse1 (- 32)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 30) 2) 1)) .cse12) (or (= (mod c_ULTIMATE.start_main_~x~0 2) .cse1) (< (mod c_ULTIMATE.start_main_~x~0 4294967296) 99)) (or (<= (div (+ (- 26) .cse0 .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 24) 2) 1)) (<= (div (+ .cse0 72) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967270)) 4294967296) 1))) (or .cse11 (<= (div (+ .cse0 .cse1 (- 24)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 22) 2) 1))) (or (<= (div (+ (- 17) .cse0) (- 2)) (div (+ (- 17) .cse0 .cse1) (- 2))) .cse6) (or (<= (div (+ .cse0 .cse1 (- 18)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 16) 2) 1)) (<= (div (+ .cse0 80) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967278)) 4294967296) 1))) (or (<= (div (+ .cse0 26) (- 4294967296)) (+ (div (+ (- 4294967224) c_ULTIMATE.start_main_~x~0) 4294967296) 1)) (<= (div (+ .cse0 (- 73)) (- 2)) (div (+ .cse0 .cse1 (- 73)) (- 2)))) (or .cse12 (<= (div (+ .cse0 (- 33)) (- 2)) (div (+ .cse0 (- 33) .cse1) (- 2)))) (or (<= (div (+ .cse0 96) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967294)) 4294967296) 1)) (<= (div (+ (- 2) .cse0 .cse1) (- 2)) (+ (div c_ULTIMATE.start_main_~x~0 2) 1))) (or (<= (div (+ .cse0 30) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967228)) 4294967296) 1)) (<= (div (+ (- 69) .cse0) (- 2)) (div (+ (- 69) .cse0 .cse1) (- 2)))) (or (<= (div (+ .cse0 34) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967232)) 4294967296) 1)) (<= (div (+ .cse0 (- 65)) (- 2)) (div (+ .cse0 .cse1 (- 65)) (- 2)))) (or .cse10 (<= (div (+ .cse0 (- 40) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 38) 2) 1))) (or (<= (div (+ 88 .cse0) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967286)) 4294967296) 1)) (<= (div (+ .cse0 .cse1 (- 10)) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 8) 2) 1))) (or (<= (div (+ .cse0 (- 61)) (- 2)) (div (+ .cse0 (- 61) .cse1) (- 2))) (<= (div (+ .cse0 38) (- 4294967296)) (+ (div (+ c_ULTIMATE.start_main_~x~0 (- 4294967236)) 4294967296) 1))) (or (<= (div (+ .cse0 22) (- 4294967296)) (+ (div (+ (- 4294967220) c_ULTIMATE.start_main_~x~0) 4294967296) 1)) (<= (div (+ (- 77) .cse0) (- 2)) (div (+ (- 77) .cse0 .cse1) (- 2)))) (or (<= (div (+ .cse0 (- 4) .cse1) (- 2)) (+ (div (+ c_ULTIMATE.start_main_~x~0 2) 2) 1)) .cse7)))) is different from false [2021-10-29 05:41:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:58,102 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-10-29 05:41:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-29 05:41:58,103 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-29 05:41:58,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:58,104 INFO L225 Difference]: With dead ends: 60 [2021-10-29 05:41:58,104 INFO L226 Difference]: Without dead ends: 55 [2021-10-29 05:41:58,108 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 52 SyntacticMatches, 45 SemanticMatches, 103 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=1626, Invalid=8886, Unknown=2, NotChecked=406, Total=10920 [2021-10-29 05:41:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-29 05:41:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-29 05:41:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2021-10-29 05:41:58,123 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2021-10-29 05:41:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:58,123 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2021-10-29 05:41:58,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2021-10-29 05:41:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-29 05:41:58,125 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:58,125 INFO L513 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1] [2021-10-29 05:41:58,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:41:58,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-29 05:41:58,329 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:58,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:58,329 INFO L85 PathProgramCache]: Analyzing trace with hash -28668056, now seen corresponding path program 6 times [2021-10-29 05:41:58,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:58,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345894336] [2021-10-29 05:41:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:58,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:41:58,409 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:41:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:41:58,537 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:41:58,537 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:41:58,539 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:41:58,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-29 05:41:58,544 INFO L731 BasicCegarLoop]: Path program histogram: [6, 1] [2021-10-29 05:41:58,556 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:41:58,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:41:58 BoogieIcfgContainer [2021-10-29 05:41:58,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:41:58,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:41:58,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:41:58,620 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:41:58,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:30:55" (3/4) ... [2021-10-29 05:41:58,627 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:41:58,720 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:41:58,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:41:58,721 INFO L168 Benchmark]: Toolchain (without parser) took 664092.37 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 74.5 MB in the beginning and 86.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:58,722 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 84.9 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:41:58,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.21 ms. Allocated memory is still 111.1 MB. Free memory was 74.3 MB in the beginning and 85.9 MB in the end (delta: -11.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:58,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.55 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:58,723 INFO L168 Benchmark]: Boogie Preprocessor took 52.60 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 83.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:58,723 INFO L168 Benchmark]: RCFGBuilder took 436.45 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 72.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:58,724 INFO L168 Benchmark]: TraceAbstraction took 663123.15 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 72.3 MB in the beginning and 91.7 MB in the end (delta: -19.4 MB). Peak memory consumption was 89.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:58,724 INFO L168 Benchmark]: Witness Printer took 100.96 ms. Allocated memory is still 142.6 MB. Free memory was 91.7 MB in the beginning and 86.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:58,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 84.9 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.21 ms. Allocated memory is still 111.1 MB. Free memory was 74.3 MB in the beginning and 85.9 MB in the end (delta: -11.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.55 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.60 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 83.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 436.45 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 72.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 663123.15 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 72.3 MB in the beginning and 91.7 MB in the end (delta: -19.4 MB). Peak memory consumption was 89.6 MB. Max. memory is 16.1 GB. * Witness Printer took 100.96 ms. Allocated memory is still 142.6 MB. Free memory was 91.7 MB in the beginning and 86.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 [L17] COND FALSE !(x < 99) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 662.9s, OverallIterations: 7, TraceHistogramMax: 50, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 606.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 6 SDslu, 194 SDs, 0 SdLazy, 3208 SolverSat, 266 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 435 GetRequests, 118 SyntacticMatches, 78 SemanticMatches, 239 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2097 ImplicationChecksByTransitivity, 625.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=6, InterpolantAutomatonStates: 147, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 47.7s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 297 ConstructedInterpolants, 0 QuantifiedInterpolants, 9671 SizeOfPredicates, 25 NumberOfNonLiveVariables, 371 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:41:58,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3309e39f-0755-4100-97a8-e3d5e1077abe/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...