./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7 --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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:23:42,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:23:42,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:23:42,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:23:42,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:23:42,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:23:42,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:23:42,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:23:42,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:23:42,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:23:42,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:23:42,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:23:42,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:23:42,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:23:42,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:23:42,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:23:42,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:23:42,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:23:42,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:23:42,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:23:42,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:23:42,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:23:42,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:23:42,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:23:42,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:23:42,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:23:42,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:23:42,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:23:42,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:23:42,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:23:42,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:23:42,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:23:42,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:23:42,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:23:42,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:23:42,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:23:42,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:23:42,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:23:42,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:23:42,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:23:42,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:23:42,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:23:42,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:23:42,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:23:42,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:23:42,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:23:42,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:23:42,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:23:42,992 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:23:42,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:23:42,993 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:23:42,993 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:23:42,994 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:23:42,994 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:23:42,994 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:23:42,995 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:23:42,995 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:23:42,995 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:23:42,995 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:23:42,995 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:23:42,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:23:42,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:23:42,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:23:42,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:23:42,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:23:42,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:23:42,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:23:42,998 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:23:43,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:23:43,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:23:43,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:23:43,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:43,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:23:43,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:23:43,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:23:43,001 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:23:43,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:23:43,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:23:43,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:23:43,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:23:43,002 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_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-25 18:23:43,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:23:43,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:23:43,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:23:43,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:23:43,304 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:23:43,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-25 18:23:43,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/data/f3a03d2f0/4510e941a75f4b5ab5e6218151716185/FLAG38c583b97 [2021-11-25 18:23:44,047 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:23:44,047 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-25 18:23:44,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/data/f3a03d2f0/4510e941a75f4b5ab5e6218151716185/FLAG38c583b97 [2021-11-25 18:23:44,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/data/f3a03d2f0/4510e941a75f4b5ab5e6218151716185 [2021-11-25 18:23:44,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:23:44,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:23:44,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:44,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:23:44,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:23:44,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:44" (1/1) ... [2021-11-25 18:23:44,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71294c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:44, skipping insertion in model container [2021-11-25 18:23:44,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:44" (1/1) ... [2021-11-25 18:23:44,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:23:44,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:23:44,940 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-25 18:23:45,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:45,027 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:23:45,104 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-25 18:23:45,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:45,212 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:23:45,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45 WrapperNode [2021-11-25 18:23:45,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:45,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:45,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:23:45,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:23:45,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,292 INFO L137 Inliner]: procedures = 347, calls = 114, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 366 [2021-11-25 18:23:45,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:45,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:23:45,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:23:45,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:23:45,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:23:45,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:23:45,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:23:45,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:23:45,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (1/1) ... [2021-11-25 18:23:45,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:45,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:45,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:23:45,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:23:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:23:45,448 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:23:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:23:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:23:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:23:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:23:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:23:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-25 18:23:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:23:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:23:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:23:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:23:45,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:23:45,829 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:23:45,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:23:46,283 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:23:46,455 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:23:46,456 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-25 18:23:46,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:46 BoogieIcfgContainer [2021-11-25 18:23:46,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:23:46,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:23:46,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:23:46,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:23:46,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:23:44" (1/3) ... [2021-11-25 18:23:46,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11075439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:46, skipping insertion in model container [2021-11-25 18:23:46,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:45" (2/3) ... [2021-11-25 18:23:46,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11075439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:46, skipping insertion in model container [2021-11-25 18:23:46,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:46" (3/3) ... [2021-11-25 18:23:46,469 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-11-25 18:23:46,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:23:46,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:23:46,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:23:46,528 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:23:46,528 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:23:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 38 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:23:46,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 18:23:46,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:46,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:46,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:23:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash -101755031, now seen corresponding path program 1 times [2021-11-25 18:23:46,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:46,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565946255] [2021-11-25 18:23:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:46,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:47,046 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:47,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565946255] [2021-11-25 18:23:47,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565946255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:47,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:47,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:47,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518751281] [2021-11-25 18:23:47,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:47,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:47,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:47,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:47,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:47,087 INFO L87 Difference]: Start difference. First operand has 42 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 38 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:23:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:47,170 INFO L93 Difference]: Finished difference Result 83 states and 131 transitions. [2021-11-25 18:23:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:47,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-25 18:23:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:47,180 INFO L225 Difference]: With dead ends: 83 [2021-11-25 18:23:47,180 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 18:23:47,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:47,188 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:47,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:47,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 18:23:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 18:23:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:23:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-25 18:23:47,226 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2021-11-25 18:23:47,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:47,227 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-25 18:23:47,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:23:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-25 18:23:47,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:23:47,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:47,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:47,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:23:47,229 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:23:47,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:47,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2009757250, now seen corresponding path program 1 times [2021-11-25 18:23:47,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:47,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055134145] [2021-11-25 18:23:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:47,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:47,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:47,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055134145] [2021-11-25 18:23:47,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055134145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:47,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363822713] [2021-11-25 18:23:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:47,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:47,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:47,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:47,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:23:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:47,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:23:47,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:47,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:47,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363822713] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:47,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [141123354] [2021-11-25 18:23:47,769 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-11-25 18:23:47,769 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:47,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:47,781 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:47,784 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:48,272 INFO L354 Elim1Store]: treesize reduction 198, result has 33.6 percent of original size [2021-11-25 18:23:48,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 67 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 22 case distinctions, treesize of input 72 treesize of output 149 [2021-11-25 18:23:48,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 67 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 94 [2021-11-25 18:23:48,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 57 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 182 [2021-11-25 18:23:48,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 18:23:48,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:23:48,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:23:48,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:23:48,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 57 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 190 [2021-11-25 18:23:48,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 18:23:48,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:23:49,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2021-11-25 18:23:49,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,381 INFO L354 Elim1Store]: treesize reduction 280, result has 15.4 percent of original size [2021-11-25 18:23:49,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 834 treesize of output 773 [2021-11-25 18:23:49,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,507 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:23:49,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 823 treesize of output 830 [2021-11-25 18:23:50,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2021-11-25 18:23:50,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:23:50,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2021-11-25 18:23:50,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2021-11-25 18:23:50,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:50,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:23:50,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:23:50,484 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-25 18:23:50,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 19 [2021-11-25 18:23:50,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 18:23:50,543 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 18:23:50,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 18:23:50,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 18:23:50,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:50,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-25 18:23:50,626 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 50 for LOIs [2021-11-25 18:23:50,646 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:51,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [141123354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:51,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:23:51,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2021-11-25 18:23:51,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068778219] [2021-11-25 18:23:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:51,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:23:51,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:23:51,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:23:51,396 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:23:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:51,493 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-25 18:23:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:23:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-25 18:23:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:51,494 INFO L225 Difference]: With dead ends: 30 [2021-11-25 18:23:51,494 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 18:23:51,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:23:51,496 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:51,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2021-11-25 18:23:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 18:23:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 18:23:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:23:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-25 18:23:51,503 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2021-11-25 18:23:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:51,503 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-25 18:23:51,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:23:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-25 18:23:51,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:23:51,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:51,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:51,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:51,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:51,722 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:23:51,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:51,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1509474740, now seen corresponding path program 1 times [2021-11-25 18:23:51,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:51,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181038052] [2021-11-25 18:23:51,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:51,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:23:51,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:51,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181038052] [2021-11-25 18:23:51,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181038052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:51,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038370112] [2021-11-25 18:23:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:51,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:51,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:51,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:51,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:23:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:52,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:23:52,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:23:52,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:52,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038370112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:52,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:23:52,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 18:23:52,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922842008] [2021-11-25 18:23:52,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:52,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:52,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:52,062 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:23:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:52,089 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-11-25 18:23:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:52,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-25 18:23:52,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:52,095 INFO L225 Difference]: With dead ends: 33 [2021-11-25 18:23:52,095 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 18:23:52,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:52,098 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:52,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:23:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 18:23:52,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 18:23:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:23:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-25 18:23:52,108 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2021-11-25 18:23:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:52,108 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-25 18:23:52,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:23:52,109 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-25 18:23:52,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 18:23:52,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:52,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:52,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:52,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:52,333 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:23:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:52,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1595495186, now seen corresponding path program 1 times [2021-11-25 18:23:52,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:52,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587145563] [2021-11-25 18:23:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:52,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:23:52,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:52,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587145563] [2021-11-25 18:23:52,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587145563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:52,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379279677] [2021-11-25 18:23:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:52,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:52,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:52,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:52,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:23:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:52,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:23:52,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:23:52,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:23:52,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379279677] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:52,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1214211945] [2021-11-25 18:23:52,711 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-25 18:23:52,711 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:52,712 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:52,712 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:52,712 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:52,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:53,187 INFO L354 Elim1Store]: treesize reduction 314, result has 44.4 percent of original size [2021-11-25 18:23:53,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 29 case distinctions, treesize of input 212 treesize of output 408 [2021-11-25 18:23:53,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 334 treesize of output 304 [2021-11-25 18:23:53,705 INFO L354 Elim1Store]: treesize reduction 8, result has 89.0 percent of original size [2021-11-25 18:23:53,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 9 case distinctions, treesize of input 357 treesize of output 389 [2021-11-25 18:23:54,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:54,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:54,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:54,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:54,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:54,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:54,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:54,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:54,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:54,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:54,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 435 treesize of output 377 [2021-11-25 18:23:55,423 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:55,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:55,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:55,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 40 [2021-11-25 18:23:56,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:56,369 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:57,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:57,759 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:58,300 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:58,401 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:58,470 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:58,529 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:58,550 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:58,587 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:23:58,924 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:00,267 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:00,364 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:00,424 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:00,476 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:00,494 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:00,524 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:00,880 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:03,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:03,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:03,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:03,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 40 [2021-11-25 18:24:03,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:04,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 40 [2021-11-25 18:24:04,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 40 [2021-11-25 18:24:04,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 30 [2021-11-25 18:24:04,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 40 [2021-11-25 18:24:04,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 18:24:04,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:04,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 40 [2021-11-25 18:24:05,619 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:05,798 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:05,915 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:05,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:05,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 18:24:06,081 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:06,508 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:09,747 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:10,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:10,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:10,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:10,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 40 [2021-11-25 18:24:12,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:15,778 INFO L354 Elim1Store]: treesize reduction 198, result has 33.6 percent of original size [2021-11-25 18:24:15,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 67 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 22 case distinctions, treesize of input 72 treesize of output 149 [2021-11-25 18:24:15,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 67 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 94 [2021-11-25 18:24:15,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:24:15,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:24:16,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:24:16,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 57 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 3092 treesize of output 2225 [2021-11-25 18:24:17,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:17,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 18:24:17,367 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:24:19,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:24:19,209 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-25 18:24:19,327 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:24:19,806 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-25 18:24:22,243 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-25 18:24:22,308 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-25 18:24:22,333 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:24:23,478 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 5073 conjuctions. This might take some time... [2021-11-25 18:24:36,282 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 5073 conjuctions. [2021-11-25 18:24:36,535 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-25 18:24:36,621 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:24:37,109 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-25 18:24:40,394 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-25 18:24:40,460 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-25 18:24:40,485 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:24:41,731 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 5073 conjuctions. This might take some time... [2021-11-25 18:24:58,687 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 5073 conjuctions. [2021-11-25 18:24:59,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:24:59,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2021-11-25 18:24:59,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2021-11-25 18:24:59,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:24:59,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:24:59,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:24:59,262 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 18:24:59,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 18:24:59,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 18:24:59,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-11-25 18:24:59,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-25 18:24:59,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 18:24:59,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 427 treesize of output 273 [2021-11-25 18:24:59,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 64 [2021-11-25 18:24:59,568 INFO L354 Elim1Store]: treesize reduction 68, result has 34.0 percent of original size [2021-11-25 18:24:59,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 57 [2021-11-25 18:24:59,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:59,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:59,652 INFO L354 Elim1Store]: treesize reduction 28, result has 33.3 percent of original size [2021-11-25 18:24:59,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 60 [2021-11-25 18:24:59,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-25 18:24:59,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:59,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:59,809 INFO L354 Elim1Store]: treesize reduction 64, result has 26.4 percent of original size [2021-11-25 18:24:59,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 264 treesize of output 152 [2021-11-25 18:24:59,857 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-25 18:24:59,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 77 [2021-11-25 18:24:59,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:59,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 105 [2021-11-25 18:24:59,993 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-25 18:24:59,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 130 [2021-11-25 18:25:00,031 INFO L354 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2021-11-25 18:25:00,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 84 [2021-11-25 18:25:00,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:25:00,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:00,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:00,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:00,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:00,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:00,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:00,227 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:25:00,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 709 treesize of output 515 [2021-11-25 18:25:00,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:00,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:00,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:00,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:00,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:00,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:00,304 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:25:00,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 208 [2021-11-25 18:25:00,439 INFO L354 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2021-11-25 18:25:00,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 186 treesize of output 223 [2021-11-25 18:25:00,531 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 18:25:00,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 179 [2021-11-25 18:25:00,746 INFO L354 Elim1Store]: treesize reduction 44, result has 60.4 percent of original size [2021-11-25 18:25:00,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 187 treesize of output 238 [2021-11-25 18:25:00,821 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 18:25:00,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2021-11-25 18:25:00,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:00,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 38 [2021-11-25 18:25:03,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:03,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:03,934 INFO L354 Elim1Store]: treesize reduction 209, result has 14.0 percent of original size [2021-11-25 18:25:03,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 4320 treesize of output 4240 [2021-11-25 18:25:04,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:04,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:04,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:04,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:04,079 INFO L354 Elim1Store]: treesize reduction 100, result has 18.7 percent of original size [2021-11-25 18:25:04,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 4293 treesize of output 3733 [2021-11-25 18:25:04,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:04,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:04,212 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-25 18:25:04,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 4182 treesize of output 4176 [2021-11-25 18:25:06,513 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-25 18:25:06,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 130 [2021-11-25 18:25:06,555 INFO L354 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2021-11-25 18:25:06,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 84 [2021-11-25 18:25:06,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:25:06,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:06,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:06,735 INFO L354 Elim1Store]: treesize reduction 432, result has 5.1 percent of original size [2021-11-25 18:25:06,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 416 treesize of output 259 [2021-11-25 18:25:06,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:06,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:06,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:06,795 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:25:06,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 50 [2021-11-25 18:25:06,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:06,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:06,836 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:25:06,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 42 [2021-11-25 18:25:06,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2021-11-25 18:25:06,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-11-25 18:25:06,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:06,962 INFO L354 Elim1Store]: treesize reduction 96, result has 39.6 percent of original size [2021-11-25 18:25:06,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 229 treesize of output 170 [2021-11-25 18:25:06,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:07,021 INFO L354 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2021-11-25 18:25:07,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 124 [2021-11-25 18:25:07,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 18:25:07,155 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-25 18:25:07,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 130 [2021-11-25 18:25:07,199 INFO L354 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2021-11-25 18:25:07,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 84 [2021-11-25 18:25:07,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:25:07,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:07,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:07,468 INFO L354 Elim1Store]: treesize reduction 432, result has 5.1 percent of original size [2021-11-25 18:25:07,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 416 treesize of output 259 [2021-11-25 18:25:07,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:07,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:07,524 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:25:07,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 50 [2021-11-25 18:25:07,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:07,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:07,568 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:25:07,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 42 [2021-11-25 18:25:07,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2021-11-25 18:25:07,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-11-25 18:25:07,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:07,726 INFO L354 Elim1Store]: treesize reduction 108, result has 39.0 percent of original size [2021-11-25 18:25:07,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 244 treesize of output 191 [2021-11-25 18:25:07,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:25:07,813 INFO L354 Elim1Store]: treesize reduction 70, result has 40.2 percent of original size [2021-11-25 18:25:07,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 139 [2021-11-25 18:25:07,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:07,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 18:25:07,949 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-25 18:25:07,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 130 [2021-11-25 18:25:07,991 INFO L354 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2021-11-25 18:25:07,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 84 [2021-11-25 18:25:08,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:25:08,045 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 50 for LOIs [2021-11-25 18:25:08,063 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:25:08,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1214211945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:08,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:25:08,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 3, 4] total 16 [2021-11-25 18:25:08,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278000589] [2021-11-25 18:25:08,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:08,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:25:08,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:08,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:25:08,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:25:08,924 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:25:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:25:09,131 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-11-25 18:25:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:25:09,132 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-25 18:25:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:25:09,132 INFO L225 Difference]: With dead ends: 21 [2021-11-25 18:25:09,132 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 18:25:09,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:25:09,134 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:25:09,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2021-11-25 18:25:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 18:25:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 18:25:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-25 18:25:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 18:25:09,136 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-11-25 18:25:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:09,137 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 18:25:09,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:25:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 18:25:09,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 18:25:09,139 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:25:09,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:25:09,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:25:09,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 18:25:09,877 INFO L858 garLoopResultBuilder]: For program point L1357(lines 1357 1377) no Hoare annotation was computed. [2021-11-25 18:25:09,877 INFO L858 garLoopResultBuilder]: For program point L1357-1(lines 1357 1377) no Hoare annotation was computed. [2021-11-25 18:25:09,878 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 18:25:09,878 INFO L861 garLoopResultBuilder]: At program point L1589(line 1589) the Hoare annotation is: true [2021-11-25 18:25:09,878 INFO L861 garLoopResultBuilder]: At program point L1589-1(line 1589) the Hoare annotation is: true [2021-11-25 18:25:09,878 INFO L854 garLoopResultBuilder]: At program point L1606-3(lines 1606 1613) the Hoare annotation is: (and (<= ~bb_errno~0.base 10) (<= 0 (+ |ULTIMATE.start_main_~argc~0#1| 2147483648)) (= |~#bb_errno_location~0.offset| 0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~optind~0 1) (<= |ULTIMATE.start_main_~argc~0#1| 2147483647) (<= 10 ~bb_errno~0.base) (<= 0 ~applet_name~0.offset) (= |~#bb_errno_location~0.base| 10) (<= ~bb_errno~0.offset 0) (= |ULTIMATE.start_main_~mem_track~0#1.offset| 0) (= 11 |~#dummy_utmp~0.base|) (<= ~applet_name~0.offset 0) (= |#NULL.offset| 0) (= |~#dummy_utmp~0.offset| 0) (= |ULTIMATE.start_main_~argv~0#1.offset| 0) (<= 10 |ULTIMATE.start_main_~i~3#1|) (<= 0 |#StackHeapBarrier|) (<= 0 ~bb_errno~0.offset) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~i~4#1|)) [2021-11-25 18:25:09,878 INFO L858 garLoopResultBuilder]: For program point L1491(lines 1491 1492) no Hoare annotation was computed. [2021-11-25 18:25:09,878 INFO L858 garLoopResultBuilder]: For program point L1359(lines 1359 1376) no Hoare annotation was computed. [2021-11-25 18:25:09,878 INFO L858 garLoopResultBuilder]: For program point L1362(lines 1362 1375) no Hoare annotation was computed. [2021-11-25 18:25:09,879 INFO L861 garLoopResultBuilder]: At program point L1478(lines 1462 1479) the Hoare annotation is: true [2021-11-25 18:25:09,879 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 18:25:09,879 INFO L861 garLoopResultBuilder]: At program point L1495(lines 1480 1496) the Hoare annotation is: true [2021-11-25 18:25:09,879 INFO L854 garLoopResultBuilder]: At program point L1611-3(lines 1611 1612) the Hoare annotation is: (and (<= ~bb_errno~0.base 10) (= |~#bb_errno_location~0.offset| 0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~optind~0 1) (<= |ULTIMATE.start_main_~argc~0#1| 2147483647) (<= 10 ~bb_errno~0.base) (<= 0 ~applet_name~0.offset) (<= 0 |ULTIMATE.start_main_~argc~0#1|) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |~#bb_errno_location~0.base| 10) (<= ~bb_errno~0.offset 0) (= |ULTIMATE.start_main_~mem_track~0#1.offset| 0) (= 11 |~#dummy_utmp~0.base|) (<= ~applet_name~0.offset 0) (= |#NULL.offset| 0) (= |~#dummy_utmp~0.offset| 0) (= |ULTIMATE.start_main_~argv~0#1.offset| 0) (<= |ULTIMATE.start_main_~i~4#1| 2147483647) (<= 10 |ULTIMATE.start_main_~i~3#1|) (<= 0 |#StackHeapBarrier|) (<= 0 ~bb_errno~0.offset) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~i~4#1|)) [2021-11-25 18:25:09,879 INFO L858 garLoopResultBuilder]: For program point L1446(lines 1446 1453) no Hoare annotation was computed. [2021-11-25 18:25:09,879 INFO L861 garLoopResultBuilder]: At program point L1446-1(lines 1446 1453) the Hoare annotation is: true [2021-11-25 18:25:09,879 INFO L858 garLoopResultBuilder]: For program point L1364(lines 1364 1374) no Hoare annotation was computed. [2021-11-25 18:25:09,879 INFO L858 garLoopResultBuilder]: For program point L1447-1(lines 1447 1453) no Hoare annotation was computed. [2021-11-25 18:25:09,879 INFO L861 garLoopResultBuilder]: At program point L1447-4(lines 1447 1453) the Hoare annotation is: true [2021-11-25 18:25:09,880 INFO L854 garLoopResultBuilder]: At program point L1596-3(lines 1596 1597) the Hoare annotation is: (and (<= ~bb_errno~0.base 10) (= |~#bb_errno_location~0.offset| 0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= 10 ~bb_errno~0.base) (= |~#bb_errno_location~0.base| 10) (<= ~bb_errno~0.offset 0) (= 11 |~#dummy_utmp~0.base|) (= ~applet_name~0.offset 0) (= |#NULL.offset| 0) (= |~#dummy_utmp~0.offset| 0) (<= 0 |ULTIMATE.start_main_~i~3#1|) (<= 0 |#StackHeapBarrier|) (= ~applet_name~0.base 0) (<= 0 ~bb_errno~0.offset) (= |#NULL.base| 0)) [2021-11-25 18:25:09,880 INFO L858 garLoopResultBuilder]: For program point L1482(lines 1482 1494) no Hoare annotation was computed. [2021-11-25 18:25:09,880 INFO L858 garLoopResultBuilder]: For program point L1482-1(lines 1482 1494) no Hoare annotation was computed. [2021-11-25 18:25:09,880 INFO L858 garLoopResultBuilder]: For program point L1449(lines 1449 1450) no Hoare annotation was computed. [2021-11-25 18:25:09,880 INFO L858 garLoopResultBuilder]: For program point L1367(lines 1367 1373) no Hoare annotation was computed. [2021-11-25 18:25:09,880 INFO L861 garLoopResultBuilder]: At program point L1466-3(lines 1466 1477) the Hoare annotation is: true [2021-11-25 18:25:09,881 INFO L854 garLoopResultBuilder]: At program point L1334(lines 1334 1392) the Hoare annotation is: (let ((.cse0 (+ 8 |ULTIMATE.start___main_~argv#1.offset|))) (and (<= ~bb_errno~0.base 10) (= |ULTIMATE.start___main_#in~argv#1.offset| |ULTIMATE.start_main_~argv~0#1.offset|) (<= 0 (+ |ULTIMATE.start_main_~argc~0#1| 2147483648)) (= |~#bb_errno_location~0.offset| 0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~optind~0 1) (= |ULTIMATE.start___main_#t~mem41#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start___main_~argv#1.base|) .cse0)) (<= |ULTIMATE.start_main_~argc~0#1| |ULTIMATE.start_main_~i~4#1|) (<= |ULTIMATE.start_main_~argc~0#1| 2147483647) (<= 10 ~bb_errno~0.base) (<= 0 ~applet_name~0.offset) (= |~#bb_errno_location~0.base| 10) (= |ULTIMATE.start___main_~argv#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (<= ~bb_errno~0.offset 0) (= |ULTIMATE.start_main_~mem_track~0#1.offset| 0) (= 11 |~#dummy_utmp~0.base|) (<= ~applet_name~0.offset 0) (= |#NULL.offset| 0) (= |~#dummy_utmp~0.offset| 0) (= |ULTIMATE.start_main_~argv~0#1.offset| 0) (= |ULTIMATE.start___main_#in~argc#1| |ULTIMATE.start_main_~argc~0#1|) (= |ULTIMATE.start___main_~argc#1| |ULTIMATE.start___main_#in~argc#1|) (<= 10 |ULTIMATE.start_main_~i~3#1|) (= |ULTIMATE.start_main_~argv~0#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 ~bb_errno~0.offset) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start___main_~argv#1.base|) .cse0) |ULTIMATE.start___main_#t~mem41#1.base|) (= |ULTIMATE.start___main_#in~argv#1.offset| |ULTIMATE.start___main_~argv#1.offset|) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~i~4#1|))) [2021-11-25 18:25:09,881 INFO L858 garLoopResultBuilder]: For program point L1334-1(lines 1325 1420) no Hoare annotation was computed. [2021-11-25 18:25:09,881 INFO L861 garLoopResultBuilder]: At program point L1615-3(lines 1615 1616) the Hoare annotation is: true [2021-11-25 18:25:09,881 INFO L858 garLoopResultBuilder]: For program point L1351-1(lines 1351 1385) no Hoare annotation was computed. [2021-11-25 18:25:09,881 INFO L858 garLoopResultBuilder]: For program point L1484(lines 1484 1493) no Hoare annotation was computed. [2021-11-25 18:25:09,881 INFO L858 garLoopResultBuilder]: For program point L1501-1(lines 1501 1509) no Hoare annotation was computed. [2021-11-25 18:25:09,881 INFO L861 garLoopResultBuilder]: At program point L1501-3(lines 1501 1509) the Hoare annotation is: true [2021-11-25 18:25:09,881 INFO L858 garLoopResultBuilder]: For program point L1369(lines 1369 1372) no Hoare annotation was computed. [2021-11-25 18:25:09,881 INFO L861 garLoopResultBuilder]: At program point L1501-4(lines 1501 1509) the Hoare annotation is: true [2021-11-25 18:25:09,882 INFO L861 garLoopResultBuilder]: At program point L1419(lines 1324 1420) the Hoare annotation is: true [2021-11-25 18:25:09,882 INFO L858 garLoopResultBuilder]: For program point L1469(lines 1469 1474) no Hoare annotation was computed. [2021-11-25 18:25:09,882 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1371) no Hoare annotation was computed. [2021-11-25 18:25:09,882 INFO L854 garLoopResultBuilder]: At program point L1602(line 1602) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |~#bb_errno_location~0.base|) |~#bb_errno_location~0.offset|))) (and (<= ~bb_errno~0.base 10) (<= 0 (+ |ULTIMATE.start_main_~argc~0#1| 2147483648)) (= |~#bb_errno_location~0.offset| 0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~optind~0 1) (<= .cse0 2147483647) (<= |ULTIMATE.start_main_~argc~0#1| 2147483647) (<= 10 ~bb_errno~0.base) (= |ULTIMATE.start_main_~a~0#1.offset| ~applet_name~0.offset) (<= 0 (+ .cse0 2147483648)) (= |~#bb_errno_location~0.base| 10) (<= ~bb_errno~0.offset 0) (= ~applet_name~0.base |ULTIMATE.start_main_~a~0#1.base|) (= 11 |~#dummy_utmp~0.base|) (= |#NULL.offset| 0) (= |~#dummy_utmp~0.offset| 0) (<= 10 |ULTIMATE.start_main_~i~3#1|) (<= 0 |#StackHeapBarrier|) (<= 0 ~bb_errno~0.offset) (= |#NULL.base| 0))) [2021-11-25 18:25:09,882 INFO L858 garLoopResultBuilder]: For program point L1602-1(line 1602) no Hoare annotation was computed. [2021-11-25 18:25:09,882 INFO L858 garLoopResultBuilder]: For program point L1371(line 1371) no Hoare annotation was computed. [2021-11-25 18:25:09,882 INFO L858 garLoopResultBuilder]: For program point L1338-2(lines 1335 1392) no Hoare annotation was computed. [2021-11-25 18:25:09,883 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-11-25 18:25:09,883 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-11-25 18:25:09,888 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 18:25:09,890 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:25:09,917 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:25:09,918 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:25:09,920 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:25:09,921 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:25:09,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:25:09 BoogieIcfgContainer [2021-11-25 18:25:09,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:25:09,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:25:09,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:25:09,924 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:25:09,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:46" (3/4) ... [2021-11-25 18:25:09,928 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 18:25:09,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-25 18:25:09,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 67 nodes and edges [2021-11-25 18:25:09,950 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2021-11-25 18:25:09,952 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-25 18:25:09,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 18:25:09,954 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 18:25:09,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 18:25:09,993 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((bb_errno <= 10 && argv == argv) && 0 <= argc + 2147483648) && bb_errno_location == 0) && a == 0) && optind == 1) && 1l + argv == #memory_$Pointer$[argv][8 + argv]) && argc <= i) && argc <= 2147483647) && 10 <= bb_errno) && 0 <= applet_name) && bb_errno_location == 10) && argv == argv) && bb_errno <= 0) && mem_track == 0) && 11 == dummy_utmp) && applet_name <= 0) && #NULL == 0) && dummy_utmp == 0) && argv == 0) && \old(argc) == argc) && argc == \old(argc)) && 10 <= i) && argv == argv) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= bb_errno) && #memory_$Pointer$[argv][8 + argv] == 1l + argv) && argv == argv) && #NULL == 0) && 0 <= i [2021-11-25 18:25:10,089 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:25:10,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:25:10,093 INFO L158 Benchmark]: Toolchain (without parser) took 85845.54ms. Allocated memory was 123.7MB in the beginning and 503.3MB in the end (delta: 379.6MB). Free memory was 83.3MB in the beginning and 259.8MB in the end (delta: -176.5MB). Peak memory consumption was 203.7MB. Max. memory is 16.1GB. [2021-11-25 18:25:10,093 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 123.7MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:25:10,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 965.32ms. Allocated memory is still 123.7MB. Free memory was 83.1MB in the beginning and 64.1MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-25 18:25:10,094 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.53ms. Allocated memory is still 123.7MB. Free memory was 64.1MB in the beginning and 59.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 18:25:10,095 INFO L158 Benchmark]: Boogie Preprocessor took 64.00ms. Allocated memory is still 123.7MB. Free memory was 59.9MB in the beginning and 56.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 18:25:10,095 INFO L158 Benchmark]: RCFGBuilder took 1100.42ms. Allocated memory is still 123.7MB. Free memory was 56.3MB in the beginning and 64.7MB in the end (delta: -8.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2021-11-25 18:25:10,096 INFO L158 Benchmark]: TraceAbstraction took 83463.24ms. Allocated memory was 123.7MB in the beginning and 503.3MB in the end (delta: 379.6MB). Free memory was 63.9MB in the beginning and 268.2MB in the end (delta: -204.3MB). Peak memory consumption was 175.7MB. Max. memory is 16.1GB. [2021-11-25 18:25:10,096 INFO L158 Benchmark]: Witness Printer took 167.60ms. Allocated memory is still 503.3MB. Free memory was 268.2MB in the beginning and 259.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:25:10,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 123.7MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 965.32ms. Allocated memory is still 123.7MB. Free memory was 83.1MB in the beginning and 64.1MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.53ms. Allocated memory is still 123.7MB. Free memory was 64.1MB in the beginning and 59.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.00ms. Allocated memory is still 123.7MB. Free memory was 59.9MB in the beginning and 56.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1100.42ms. Allocated memory is still 123.7MB. Free memory was 56.3MB in the beginning and 64.7MB in the end (delta: -8.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 83463.24ms. Allocated memory was 123.7MB in the beginning and 503.3MB in the end (delta: 379.6MB). Free memory was 63.9MB in the beginning and 268.2MB in the end (delta: -204.3MB). Peak memory consumption was 175.7MB. Max. memory is 16.1GB. * Witness Printer took 167.60ms. Allocated memory is still 503.3MB. Free memory was 268.2MB in the beginning and 259.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * 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 - PositiveResult [Line: 1371]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 83.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 151 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 50 IncrementalHoareTripleChecker+Unchecked, 118 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 67 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 20 PreInvPairs, 38 NumberOfFragments, 372 HoareAnnotationTreeSize, 20 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 500 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1211 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 9/16 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: OVERALL_TIME: 78.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 18, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 34, TOOLS_POST_TIME: 37.4s, TOOLS_POST_CALL_APPLICATIONS: 6, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 44, TOOLS_QUANTIFIERELIM_TIME: 37.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 23.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 104, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 9, DOMAIN_WIDEN_TIME: 40.5s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 16, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 18, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 7, LOOP_SUMMARIZER_CACHE_MISSES: 7, LOOP_SUMMARIZER_OVERALL_TIME: 53.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 53.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 16, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 388, DAG_COMPRESSION_RETAINED_NODES: 100, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1501]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1611]: Loop Invariant Derived loop invariant: (((((((((((((((((((((bb_errno <= 10 && bb_errno_location == 0) && a == 0) && optind == 1) && argc <= 2147483647) && 10 <= bb_errno) && 0 <= applet_name) && 0 <= argc) && 0 <= j) && bb_errno_location == 10) && bb_errno <= 0) && mem_track == 0) && 11 == dummy_utmp) && applet_name <= 0) && #NULL == 0) && dummy_utmp == 0) && argv == 0) && i <= 2147483647) && 10 <= i) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= bb_errno) && #NULL == 0) && 0 <= i - InvariantResult [Line: 1462]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1615]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1596]: Loop Invariant Derived loop invariant: (((((((((((((bb_errno <= 10 && bb_errno_location == 0) && a == 0) && 10 <= bb_errno) && bb_errno_location == 10) && bb_errno <= 0) && 11 == dummy_utmp) && applet_name == 0) && #NULL == 0) && dummy_utmp == 0) && 0 <= i) && 0 <= unknown-#StackHeapBarrier-unknown) && applet_name == 0) && 0 <= bb_errno) && #NULL == 0 - InvariantResult [Line: 1606]: Loop Invariant Derived loop invariant: (((((((((((((((((((bb_errno <= 10 && 0 <= argc + 2147483648) && bb_errno_location == 0) && a == 0) && optind == 1) && argc <= 2147483647) && 10 <= bb_errno) && 0 <= applet_name) && bb_errno_location == 10) && bb_errno <= 0) && mem_track == 0) && 11 == dummy_utmp) && applet_name <= 0) && #NULL == 0) && dummy_utmp == 0) && argv == 0) && 10 <= i) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= bb_errno) && #NULL == 0) && 0 <= i - InvariantResult [Line: 1447]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1324]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1334]: Loop Invariant [2021-11-25 18:25:10,145 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:25:10,145 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:25:10,147 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:25:10,147 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: ((((((((((((((((((((((((((((bb_errno <= 10 && argv == argv) && 0 <= argc + 2147483648) && bb_errno_location == 0) && a == 0) && optind == 1) && 1l + argv == #memory_$Pointer$[argv][8 + argv]) && argc <= i) && argc <= 2147483647) && 10 <= bb_errno) && 0 <= applet_name) && bb_errno_location == 10) && argv == argv) && bb_errno <= 0) && mem_track == 0) && 11 == dummy_utmp) && applet_name <= 0) && #NULL == 0) && dummy_utmp == 0) && argv == 0) && \old(argc) == argc) && argc == \old(argc)) && 10 <= i) && argv == argv) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= bb_errno) && #memory_$Pointer$[argv][8 + argv] == 1l + argv) && argv == argv) && #NULL == 0) && 0 <= i - InvariantResult [Line: 1501]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1466]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1589]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1480]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1446]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-25 18:25:10,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e3e516f-bbd2-4d84-8135-6e64883e83e6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE