./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13ad8bc9cfa3954c0bae4db0509cb11733a45600a9e4ff56ca5bdd4aceeb1fc0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:31:25,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:31:25,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:31:25,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:31:25,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:31:25,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:31:25,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:31:25,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:31:25,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:31:25,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:31:25,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:31:25,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:31:25,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:31:25,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:31:25,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:31:25,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:31:25,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:31:25,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:31:25,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:31:25,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:31:25,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:31:25,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:31:25,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:31:25,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:31:25,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:31:25,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:31:25,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:31:25,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:31:25,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:31:25,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:31:25,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:31:25,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:31:25,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:31:25,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:31:25,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:31:25,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:31:25,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:31:25,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:31:25,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:31:25,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:31:25,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:31:25,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 00:31:25,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:31:25,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:31:25,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:31:25,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:31:25,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:31:25,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:31:25,366 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:31:25,366 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:31:25,366 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:31:25,367 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:31:25,367 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:31:25,367 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:31:25,367 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:31:25,367 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:31:25,367 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:31:25,368 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:31:25,368 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:31:25,368 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:31:25,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:31:25,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:31:25,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:31:25,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:31:25,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:31:25,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:31:25,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:31:25,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:31:25,371 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:31:25,371 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:31:25,371 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:31:25,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:31:25,371 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:31:25,372 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:31:25,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:31:25,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:31:25,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:31:25,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:31:25,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:31:25,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:31:25,373 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:31:25,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:31:25,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:31:25,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:31:25,374 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_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ad8bc9cfa3954c0bae4db0509cb11733a45600a9e4ff56ca5bdd4aceeb1fc0 [2021-11-21 00:31:25,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:31:25,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:31:25,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:31:25,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:31:25,638 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:31:25,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2021-11-21 00:31:25,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/data/ff3e5eff5/149501a75cbe4d1398d93a8067688ba8/FLAG40625cd79 [2021-11-21 00:31:26,229 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:31:26,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2021-11-21 00:31:26,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/data/ff3e5eff5/149501a75cbe4d1398d93a8067688ba8/FLAG40625cd79 [2021-11-21 00:31:26,621 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/data/ff3e5eff5/149501a75cbe4d1398d93a8067688ba8 [2021-11-21 00:31:26,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:31:26,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:31:26,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:31:26,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:31:26,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:31:26,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9998b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26, skipping insertion in model container [2021-11-21 00:31:26,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:31:26,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:31:26,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:31:26,858 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:31:26,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:31:26,902 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:31:26,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26 WrapperNode [2021-11-21 00:31:26,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:31:26,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:31:26,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:31:26,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:31:26,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,939 INFO L137 Inliner]: procedures = 9, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2021-11-21 00:31:26,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:31:26,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:31:26,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:31:26,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:31:26,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:31:26,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:31:26,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:31:26,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:31:26,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (1/1) ... [2021-11-21 00:31:26,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:31:26,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:27,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:31:27,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:31:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:31:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:31:27,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:31:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:31:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:31:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:31:27,146 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:31:27,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:31:27,328 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:31:27,399 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:31:27,405 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-21 00:31:27,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:31:27 BoogieIcfgContainer [2021-11-21 00:31:27,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:31:27,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:31:27,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:31:27,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:31:27,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:31:26" (1/3) ... [2021-11-21 00:31:27,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7043d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:31:27, skipping insertion in model container [2021-11-21 00:31:27,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:26" (2/3) ... [2021-11-21 00:31:27,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7043d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:31:27, skipping insertion in model container [2021-11-21 00:31:27,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:31:27" (3/3) ... [2021-11-21 00:31:27,430 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2.c [2021-11-21 00:31:27,436 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:31:27,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-21 00:31:27,518 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:31:27,540 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-21 00:31:27,542 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-21 00:31:27,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:31:27,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:27,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:31:27,577 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:27,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash 4075446, now seen corresponding path program 1 times [2021-11-21 00:31:27,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:27,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798471373] [2021-11-21 00:31:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:27,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:27,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:27,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798471373] [2021-11-21 00:31:27,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798471373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:27,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:27,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:31:27,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414704518] [2021-11-21 00:31:27,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:27,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:31:27,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:27,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:31:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:31:27,816 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:27,904 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-11-21 00:31:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:31:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-21 00:31:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:27,914 INFO L225 Difference]: With dead ends: 39 [2021-11-21 00:31:27,915 INFO L226 Difference]: Without dead ends: 38 [2021-11-21 00:31:27,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:31:27,921 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:27,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:31:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-21 00:31:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2021-11-21 00:31:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 2.076923076923077) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-21 00:31:27,956 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 4 [2021-11-21 00:31:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:27,957 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-21 00:31:27,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-21 00:31:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:31:27,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:27,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:31:27,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:31:27,959 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash 3972391, now seen corresponding path program 1 times [2021-11-21 00:31:27,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:27,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921450229] [2021-11-21 00:31:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:27,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:28,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:28,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921450229] [2021-11-21 00:31:28,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921450229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:28,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:28,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:31:28,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424409578] [2021-11-21 00:31:28,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:28,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:31:28,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:31:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:31:28,023 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:28,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:28,100 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-11-21 00:31:28,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:31:28,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-21 00:31:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:28,102 INFO L225 Difference]: With dead ends: 40 [2021-11-21 00:31:28,102 INFO L226 Difference]: Without dead ends: 40 [2021-11-21 00:31:28,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:31:28,105 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:28,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 32 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:31:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-21 00:31:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2021-11-21 00:31:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 2.0) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-11-21 00:31:28,111 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 4 [2021-11-21 00:31:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:28,112 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-11-21 00:31:28,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-11-21 00:31:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:31:28,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:28,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:31:28,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:31:28,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash 123235085, now seen corresponding path program 1 times [2021-11-21 00:31:28,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:28,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370588749] [2021-11-21 00:31:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:28,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:28,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:28,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370588749] [2021-11-21 00:31:28,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370588749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:28,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:28,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:31:28,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307087230] [2021-11-21 00:31:28,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:28,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:31:28,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:28,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:31:28,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:31:28,168 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-21 00:31:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:28,228 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-21 00:31:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:31:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 00:31:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:28,232 INFO L225 Difference]: With dead ends: 23 [2021-11-21 00:31:28,232 INFO L226 Difference]: Without dead ends: 23 [2021-11-21 00:31:28,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:31:28,234 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:28,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:31:28,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-21 00:31:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-21 00:31:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-11-21 00:31:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-21 00:31:28,243 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 5 [2021-11-21 00:31:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:28,244 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-21 00:31:28,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-21 00:31:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-21 00:31:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:31:28,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:28,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:31:28,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:31:28,248 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash 123235086, now seen corresponding path program 1 times [2021-11-21 00:31:28,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:28,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896621775] [2021-11-21 00:31:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:28,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:28,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:28,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:28,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896621775] [2021-11-21 00:31:28,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896621775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:28,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:28,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:31:28,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710469431] [2021-11-21 00:31:28,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:28,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:31:28,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:28,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:31:28,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:31:28,318 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-21 00:31:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:28,405 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-11-21 00:31:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:31:28,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 00:31:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:28,406 INFO L225 Difference]: With dead ends: 41 [2021-11-21 00:31:28,406 INFO L226 Difference]: Without dead ends: 41 [2021-11-21 00:31:28,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:31:28,408 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:28,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 38 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:31:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-21 00:31:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2021-11-21 00:31:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.8) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-21 00:31:28,414 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2021-11-21 00:31:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:28,414 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-21 00:31:28,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-21 00:31:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-21 00:31:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:31:28,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:28,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:31:28,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:31:28,416 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash 123237305, now seen corresponding path program 1 times [2021-11-21 00:31:28,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:28,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076400211] [2021-11-21 00:31:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:28,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:28,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:28,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076400211] [2021-11-21 00:31:28,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076400211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:28,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:28,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:31:28,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024437529] [2021-11-21 00:31:28,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:28,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:31:28,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:28,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:31:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:31:28,530 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-21 00:31:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:28,585 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-11-21 00:31:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:31:28,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 00:31:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:28,586 INFO L225 Difference]: With dead ends: 25 [2021-11-21 00:31:28,586 INFO L226 Difference]: Without dead ends: 25 [2021-11-21 00:31:28,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:31:28,594 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:28,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 15 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:31:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-21 00:31:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-11-21 00:31:28,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 21 states have internal predecessors, (25), 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) [2021-11-21 00:31:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-21 00:31:28,599 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 5 [2021-11-21 00:31:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:28,599 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-21 00:31:28,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-21 00:31:28,600 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-21 00:31:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:31:28,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:28,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:31:28,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:31:28,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:28,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash 123237306, now seen corresponding path program 1 times [2021-11-21 00:31:28,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:28,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655484260] [2021-11-21 00:31:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:28,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:28,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:28,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655484260] [2021-11-21 00:31:28,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655484260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:28,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:28,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:31:28,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329716206] [2021-11-21 00:31:28,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:28,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:31:28,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:28,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:31:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:31:28,746 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-21 00:31:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:28,820 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-21 00:31:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:31:28,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 00:31:28,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:28,821 INFO L225 Difference]: With dead ends: 23 [2021-11-21 00:31:28,821 INFO L226 Difference]: Without dead ends: 23 [2021-11-21 00:31:28,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:31:28,823 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:28,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:31:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-21 00:31:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-21 00:31:28,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.625) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-11-21 00:31:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-21 00:31:28,827 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 5 [2021-11-21 00:31:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:28,828 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-21 00:31:28,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-21 00:31:28,828 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-21 00:31:28,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:31:28,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:28,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:31:28,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:31:28,830 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:28,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:28,830 INFO L85 PathProgramCache]: Analyzing trace with hash -833181196, now seen corresponding path program 1 times [2021-11-21 00:31:28,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:28,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472959307] [2021-11-21 00:31:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:28,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:28,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472959307] [2021-11-21 00:31:28,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472959307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:31:28,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239855774] [2021-11-21 00:31:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:28,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:28,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:28,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:31:28,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:31:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:28,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:31:28,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:29,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:31:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:29,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239855774] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:31:29,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [388172923] [2021-11-21 00:31:29,120 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 00:31:29,120 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:31:29,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:31:29,132 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:31:29,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:31:29,229 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 6 treesize of output 5 [2021-11-21 00:31:29,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:29,339 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 14 treesize of output 16 [2021-11-21 00:31:30,125 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 11 [2021-11-21 00:31:30,372 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:31:30,373 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 189 treesize of output 196 [2021-11-21 00:31:31,981 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 11 [2021-11-21 00:31:32,370 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:31:32,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 196 [2021-11-21 00:31:33,654 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:31:34,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [388172923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:34,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:31:34,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 9 [2021-11-21 00:31:34,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351585634] [2021-11-21 00:31:34,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:34,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:31:34,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:34,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:31:34,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:31:34,446 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:34,603 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-11-21 00:31:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:31:34,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 00:31:34,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:34,604 INFO L225 Difference]: With dead ends: 30 [2021-11-21 00:31:34,604 INFO L226 Difference]: Without dead ends: 30 [2021-11-21 00:31:34,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:31:34,605 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:34,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:31:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-21 00:31:34,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-11-21 00:31:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 25 states have internal predecessors, (30), 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) [2021-11-21 00:31:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-21 00:31:34,609 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 8 [2021-11-21 00:31:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:34,609 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-21 00:31:34,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-21 00:31:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:31:34,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:34,610 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:31:34,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:31:34,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:34,830 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:34,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:34,830 INFO L85 PathProgramCache]: Analyzing trace with hash -61969138, now seen corresponding path program 1 times [2021-11-21 00:31:34,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:34,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352317238] [2021-11-21 00:31:34,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:34,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:34,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:34,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352317238] [2021-11-21 00:31:34,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352317238] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:31:34,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895005389] [2021-11-21 00:31:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:34,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:34,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:34,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:31:34,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:31:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:34,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:31:34,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:34,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-21 00:31:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:35,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:31:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:35,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895005389] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:31:35,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737384432] [2021-11-21 00:31:35,118 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 00:31:35,118 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:31:35,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:31:35,119 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:31:35,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:31:35,142 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 6 treesize of output 5 [2021-11-21 00:31:35,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:35,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 16 [2021-11-21 00:31:35,646 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 11 [2021-11-21 00:31:35,937 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:31:35,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 196 [2021-11-21 00:31:37,354 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 11 [2021-11-21 00:31:37,483 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:31:37,483 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 189 treesize of output 196 [2021-11-21 00:31:39,224 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:31:40,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [737384432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:40,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:31:40,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 11 [2021-11-21 00:31:40,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43583044] [2021-11-21 00:31:40,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:40,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:31:40,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:40,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:31:40,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:31:40,224 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:40,373 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-11-21 00:31:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:31:40,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 00:31:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:40,374 INFO L225 Difference]: With dead ends: 27 [2021-11-21 00:31:40,374 INFO L226 Difference]: Without dead ends: 27 [2021-11-21 00:31:40,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:31:40,375 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:40,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:31:40,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-21 00:31:40,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-21 00:31:40,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.55) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-11-21 00:31:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-21 00:31:40,380 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 9 [2021-11-21 00:31:40,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:40,380 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-21 00:31:40,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:40,380 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-21 00:31:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:31:40,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:40,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:31:40,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:31:40,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:40,602 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:40,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:40,602 INFO L85 PathProgramCache]: Analyzing trace with hash 577277023, now seen corresponding path program 1 times [2021-11-21 00:31:40,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:40,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098591120] [2021-11-21 00:31:40,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:40,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:31:40,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:40,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098591120] [2021-11-21 00:31:40,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098591120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:40,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:40,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:31:40,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101231507] [2021-11-21 00:31:40,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:40,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:31:40,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:31:40,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:31:40,632 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:40,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:40,656 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-11-21 00:31:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:31:40,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 00:31:40,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:40,657 INFO L225 Difference]: With dead ends: 33 [2021-11-21 00:31:40,657 INFO L226 Difference]: Without dead ends: 33 [2021-11-21 00:31:40,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:31:40,658 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:40,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:31:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-21 00:31:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-11-21 00:31:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 28 states have internal predecessors, (35), 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) [2021-11-21 00:31:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-11-21 00:31:40,662 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 11 [2021-11-21 00:31:40,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:40,663 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-21 00:31:40,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:31:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-11-21 00:31:40,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:31:40,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:40,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:31:40,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:31:40,664 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 577277024, now seen corresponding path program 1 times [2021-11-21 00:31:40,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:40,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751757907] [2021-11-21 00:31:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:40,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:40,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:40,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751757907] [2021-11-21 00:31:40,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751757907] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:31:40,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605816453] [2021-11-21 00:31:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:40,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:40,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:40,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:31:40,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:31:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:40,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:31:40,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:40,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:31:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:40,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605816453] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:31:40,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [581778285] [2021-11-21 00:31:40,890 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 00:31:40,890 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:31:40,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:31:40,890 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:31:40,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:31:40,929 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 6 treesize of output 5 [2021-11-21 00:31:40,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:40,987 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 14 treesize of output 16 [2021-11-21 00:31:41,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:41,848 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:31:41,848 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 203 treesize of output 210 [2021-11-21 00:31:44,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:44,155 INFO L354 Elim1Store]: treesize reduction 88, result has 22.1 percent of original size [2021-11-21 00:31:44,156 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 230 [2021-11-21 00:31:44,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:44,568 INFO L354 Elim1Store]: treesize reduction 72, result has 18.2 percent of original size [2021-11-21 00:31:44,568 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 216 [2021-11-21 00:31:45,166 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 6 treesize of output 5 [2021-11-21 00:31:45,177 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:31:45,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:45,421 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 8 treesize of output 7 [2021-11-21 00:31:45,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:31:45,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:45,718 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:31:45,718 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 15 treesize of output 15 [2021-11-21 00:31:46,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:46,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:46,069 INFO L354 Elim1Store]: treesize reduction 105, result has 28.1 percent of original size [2021-11-21 00:31:46,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 189 [2021-11-21 00:31:47,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:47,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:48,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:31:48,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:48,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-21 00:31:48,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:31:49,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:49,027 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:31:49,028 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 25 treesize of output 25 [2021-11-21 00:31:49,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:49,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:49,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:49,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:49,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:49,358 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:31:49,359 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:31:50,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:50,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:51,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:31:51,936 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:31:53,246 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:31:53,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:31:53,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-11-21 00:31:53,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788186975] [2021-11-21 00:31:53,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:31:53,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:31:53,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:31:53,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:31:53,249 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-21 00:31:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:53,384 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-11-21 00:31:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:31:53,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 00:31:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:53,385 INFO L225 Difference]: With dead ends: 51 [2021-11-21 00:31:53,385 INFO L226 Difference]: Without dead ends: 51 [2021-11-21 00:31:53,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:31:53,387 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 62 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:53,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 34 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:31:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-21 00:31:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2021-11-21 00:31:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 35 states have internal predecessors, (43), 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) [2021-11-21 00:31:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-11-21 00:31:53,393 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 11 [2021-11-21 00:31:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:53,394 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-11-21 00:31:53,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-21 00:31:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-11-21 00:31:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:31:53,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:53,395 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:31:53,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:31:53,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 00:31:53,602 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:31:53,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash 715809494, now seen corresponding path program 1 times [2021-11-21 00:31:53,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:53,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776301067] [2021-11-21 00:31:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:53,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:31:53,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:53,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776301067] [2021-11-21 00:31:53,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776301067] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:31:53,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013515870] [2021-11-21 00:31:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:53,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:53,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:53,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:31:53,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:31:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:53,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-21 00:31:53,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:31:53,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:31:53,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 00:31:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:31:53,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013515870] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:31:53,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1585243772] [2021-11-21 00:31:53,922 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:31:53,922 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:31:53,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:31:53,923 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:31:53,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:31:53,947 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 6 treesize of output 5 [2021-11-21 00:31:54,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:54,016 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 14 treesize of output 16 [2021-11-21 00:31:54,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:54,812 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:31:54,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 210 [2021-11-21 00:31:56,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:56,966 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-21 00:31:56,967 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 214 [2021-11-21 00:31:57,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:57,375 INFO L354 Elim1Store]: treesize reduction 77, result has 12.5 percent of original size [2021-11-21 00:31:57,375 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 205 [2021-11-21 00:31:57,819 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:31:57,831 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 6 treesize of output 5 [2021-11-21 00:31:58,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:58,146 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 8 treesize of output 7 [2021-11-21 00:31:58,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:31:58,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:58,409 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:31:58,409 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 15 treesize of output 15 [2021-11-21 00:31:58,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:58,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:31:58,758 INFO L354 Elim1Store]: treesize reduction 105, result has 28.1 percent of original size [2021-11-21 00:31:58,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 189 [2021-11-21 00:31:59,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:31:59,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:00,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:32:01,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:01,182 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 8 treesize of output 7 [2021-11-21 00:32:01,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:32:01,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:01,434 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:32:01,435 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 15 treesize of output 15 [2021-11-21 00:32:01,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:01,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:01,786 INFO L354 Elim1Store]: treesize reduction 105, result has 28.1 percent of original size [2021-11-21 00:32:01,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 189 [2021-11-21 00:32:02,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:02,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:03,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:32:04,356 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:32:05,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1585243772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:05,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:32:05,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 15 [2021-11-21 00:32:05,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679943041] [2021-11-21 00:32:05,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:05,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:32:05,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:05,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:32:05,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:32:05,483 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:06,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:06,154 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-11-21 00:32:06,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:32:06,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 00:32:06,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:06,155 INFO L225 Difference]: With dead ends: 41 [2021-11-21 00:32:06,155 INFO L226 Difference]: Without dead ends: 41 [2021-11-21 00:32:06,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-11-21 00:32:06,157 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 25 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:06,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 5 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:32:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-21 00:32:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-11-21 00:32:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 37 states have internal predecessors, (46), 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) [2021-11-21 00:32:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-11-21 00:32:06,161 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 12 [2021-11-21 00:32:06,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:06,162 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-11-21 00:32:06,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:06,162 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-11-21 00:32:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:32:06,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:06,163 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:06,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:32:06,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 00:32:06,363 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:32:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash 715811714, now seen corresponding path program 1 times [2021-11-21 00:32:06,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:06,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181010748] [2021-11-21 00:32:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:06,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:32:06,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:06,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181010748] [2021-11-21 00:32:06,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181010748] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:32:06,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55043939] [2021-11-21 00:32:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:06,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:06,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:06,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:32:06,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:32:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:06,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:32:06,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:32:06,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:32:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:32:06,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55043939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:32:06,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [674864747] [2021-11-21 00:32:06,550 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 00:32:06,550 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:32:06,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:32:06,551 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:32:06,551 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:32:06,560 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 6 treesize of output 5 [2021-11-21 00:32:06,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:06,637 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 14 treesize of output 16 [2021-11-21 00:32:07,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:07,332 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:32:07,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 210 [2021-11-21 00:32:09,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:09,494 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-21 00:32:09,495 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 220 [2021-11-21 00:32:09,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:09,927 INFO L354 Elim1Store]: treesize reduction 97, result has 14.2 percent of original size [2021-11-21 00:32:09,928 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 221 [2021-11-21 00:32:10,316 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 6 treesize of output 5 [2021-11-21 00:32:10,336 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:32:10,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:10,692 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 12 treesize of output 9 [2021-11-21 00:32:10,711 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 8 treesize of output 7 [2021-11-21 00:32:10,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:10,962 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:32:10,962 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 25 treesize of output 25 [2021-11-21 00:32:11,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:11,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:11,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:11,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:11,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:11,236 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:32:11,237 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:32:11,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:12,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:12,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:32:13,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:13,372 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 8 treesize of output 7 [2021-11-21 00:32:13,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:32:13,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:13,636 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:32:13,637 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 25 treesize of output 25 [2021-11-21 00:32:13,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:13,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:13,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:13,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:13,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:13,964 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:32:13,965 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:32:14,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:14,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:15,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:32:16,594 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:32:17,731 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:32:17,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:32:17,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2021-11-21 00:32:17,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045696869] [2021-11-21 00:32:17,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:32:17,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:32:17,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:17,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:32:17,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:32:17,733 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:17,820 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-11-21 00:32:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:32:17,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 00:32:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:17,821 INFO L225 Difference]: With dead ends: 33 [2021-11-21 00:32:17,821 INFO L226 Difference]: Without dead ends: 32 [2021-11-21 00:32:17,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:32:17,822 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:17,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 11 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:32:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-21 00:32:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-21 00:32:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.48) internal successors, (37), 31 states have internal predecessors, (37), 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) [2021-11-21 00:32:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-11-21 00:32:17,826 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2021-11-21 00:32:17,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:17,826 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-11-21 00:32:17,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:17,827 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-11-21 00:32:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:32:17,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:17,827 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:17,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-21 00:32:18,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:18,028 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:32:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash 698217207, now seen corresponding path program 1 times [2021-11-21 00:32:18,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:18,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775102135] [2021-11-21 00:32:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:18,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:32:18,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:18,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775102135] [2021-11-21 00:32:18,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775102135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:32:18,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569761179] [2021-11-21 00:32:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:18,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:18,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:18,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:32:18,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:32:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:18,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:32:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:32:18,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:32:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:32:18,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569761179] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:32:18,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1293842361] [2021-11-21 00:32:18,296 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:32:18,297 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:32:18,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:32:18,297 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:32:18,297 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:32:18,326 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 6 treesize of output 5 [2021-11-21 00:32:18,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:18,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 16 [2021-11-21 00:32:18,822 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 11 [2021-11-21 00:32:19,042 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:32:19,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 205 [2021-11-21 00:32:20,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:20,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:20,740 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-21 00:32:20,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:20,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:20,974 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-21 00:32:21,262 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:32:21,276 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 6 treesize of output 5 [2021-11-21 00:32:21,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:21,573 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 8 treesize of output 7 [2021-11-21 00:32:21,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:32:21,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:21,825 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:32:21,825 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 25 treesize of output 25 [2021-11-21 00:32:22,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:22,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:22,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:22,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:22,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:22,101 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:32:22,102 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:32:22,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:23,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:23,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:32:24,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:24,254 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 8 treesize of output 7 [2021-11-21 00:32:24,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:32:24,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:24,494 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:32:24,495 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 15 treesize of output 15 [2021-11-21 00:32:24,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:24,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:24,878 INFO L354 Elim1Store]: treesize reduction 105, result has 28.1 percent of original size [2021-11-21 00:32:24,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 189 [2021-11-21 00:32:25,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:25,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:26,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:32:27,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:32:27,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:32:27,323 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:32:27,323 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 90 treesize of output 99 [2021-11-21 00:32:27,352 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:32:27,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 102 [2021-11-21 00:32:28,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:28,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:28,395 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-21 00:32:28,396 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 113 [2021-11-21 00:32:29,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:29,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:30,227 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 6 treesize of output 5 [2021-11-21 00:32:30,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:32:30,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:30,498 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 8 treesize of output 7 [2021-11-21 00:32:30,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:32:30,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:30,996 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:32:30,997 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 15 treesize of output 15 [2021-11-21 00:32:31,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:32,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:32,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:33,085 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:32:33,100 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 6 treesize of output 5 [2021-11-21 00:32:33,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:33,365 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 8 treesize of output 7 [2021-11-21 00:32:33,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:32:33,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:32:33,809 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:32:33,809 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 25 treesize of output 25 [2021-11-21 00:32:34,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:35,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:35,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:36,767 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:32:36,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:32:37,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:37,645 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:32:37,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 131 treesize of output 149 [2021-11-21 00:32:38,387 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:32:38,388 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:32:39,216 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:32:39,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 79 [2021-11-21 00:32:40,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:40,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:40,805 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:32:40,816 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 6 treesize of output 5 [2021-11-21 00:32:40,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:41,315 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:32:41,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 238 treesize of output 277 [2021-11-21 00:32:41,348 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:32:41,348 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 277 treesize of output 284 [2021-11-21 00:32:46,603 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:32:46,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 317 treesize of output 229 [2021-11-21 00:32:47,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:48,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:48,545 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 6 treesize of output 5 [2021-11-21 00:32:48,570 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:32:48,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:48,948 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:32:48,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 238 treesize of output 277 [2021-11-21 00:32:48,981 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:32:48,981 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 277 treesize of output 284 [2021-11-21 00:32:53,396 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:32:53,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 383 treesize of output 286 [2021-11-21 00:32:54,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:55,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:56,295 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:32:56,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:32:56,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:57,099 INFO L354 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2021-11-21 00:32:57,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 48 [2021-11-21 00:32:57,432 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:32:57,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:32:58,699 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:32:58,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 77 [2021-11-21 00:32:59,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:32:59,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:00,230 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:33:00,239 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 6 treesize of output 5 [2021-11-21 00:33:00,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:00,627 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:33:00,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:33:00,661 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:33:00,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:33:06,554 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:33:06,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 464 treesize of output 331 [2021-11-21 00:33:08,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:08,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:08,944 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 6 treesize of output 5 [2021-11-21 00:33:08,957 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:33:09,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:09,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:33:09,258 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 8 treesize of output 7 [2021-11-21 00:33:09,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:09,485 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:33:09,486 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 15 treesize of output 15 [2021-11-21 00:33:09,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:09,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:09,784 INFO L354 Elim1Store]: treesize reduction 95, result has 34.9 percent of original size [2021-11-21 00:33:09,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 199 [2021-11-21 00:33:10,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:10,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:11,706 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:33:12,109 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:33:12,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:33:12,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:33:12,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2021-11-21 00:33:12,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287245893] [2021-11-21 00:33:12,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:33:12,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:33:12,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:12,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:33:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-11-21 00:33:12,984 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-11-21 00:33:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:13,154 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2021-11-21 00:33:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:33:13,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-21 00:33:13,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:13,156 INFO L225 Difference]: With dead ends: 52 [2021-11-21 00:33:13,157 INFO L226 Difference]: Without dead ends: 52 [2021-11-21 00:33:13,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:33:13,158 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 104 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:13,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 47 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:33:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-21 00:33:13,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 35. [2021-11-21 00:33:13,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 34 states have internal predecessors, (40), 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) [2021-11-21 00:33:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-11-21 00:33:13,163 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 14 [2021-11-21 00:33:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:13,163 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-11-21 00:33:13,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-11-21 00:33:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-11-21 00:33:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:33:13,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:13,164 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:13,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-21 00:33:13,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:33:13,382 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:33:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash 698219427, now seen corresponding path program 1 times [2021-11-21 00:33:13,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:13,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660385270] [2021-11-21 00:33:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:13,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:33:13,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:13,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660385270] [2021-11-21 00:33:13,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660385270] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:33:13,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188961804] [2021-11-21 00:33:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:13,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:33:13,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:13,601 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:33:13,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:33:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:13,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 00:33:13,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:13,665 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 6 treesize of output 5 [2021-11-21 00:33:13,669 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 6 treesize of output 5 [2021-11-21 00:33:13,701 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-21 00:33:13,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 26 [2021-11-21 00:33:13,708 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:33:13,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-21 00:33:13,871 INFO L354 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2021-11-21 00:33:13,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 38 [2021-11-21 00:33:13,911 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:33:13,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 00:33:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:33:14,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:33:14,204 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 00:33:14,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-11-21 00:33:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:33:16,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188961804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:33:16,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [932926778] [2021-11-21 00:33:16,469 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:33:16,469 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:33:16,470 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:33:16,470 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:33:16,470 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:33:16,507 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 6 treesize of output 5 [2021-11-21 00:33:16,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:33:16,609 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 14 treesize of output 16 [2021-11-21 00:33:17,242 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 11 [2021-11-21 00:33:17,484 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:33:17,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 205 [2021-11-21 00:33:19,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:19,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:33:19,129 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 00:33:19,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:19,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:33:19,324 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-21 00:33:19,745 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 6 treesize of output 5 [2021-11-21 00:33:19,756 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:33:19,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:20,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:33:20,054 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 8 treesize of output 7 [2021-11-21 00:33:20,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:20,286 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:33:20,286 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 15 treesize of output 15 [2021-11-21 00:33:20,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:20,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:20,599 INFO L354 Elim1Store]: treesize reduction 105, result has 28.1 percent of original size [2021-11-21 00:33:20,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 189 [2021-11-21 00:33:21,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:21,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:22,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:33:22,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:22,803 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 8 treesize of output 7 [2021-11-21 00:33:22,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:33:23,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:23,056 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:33:23,057 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 15 treesize of output 15 [2021-11-21 00:33:23,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:23,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:23,455 INFO L354 Elim1Store]: treesize reduction 105, result has 28.1 percent of original size [2021-11-21 00:33:23,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 189 [2021-11-21 00:33:24,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:24,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:25,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:33:25,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:33:25,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:33:26,057 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:33:26,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 90 treesize of output 99 [2021-11-21 00:33:26,088 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:33:26,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 102 [2021-11-21 00:33:27,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:27,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:27,136 INFO L354 Elim1Store]: treesize reduction 61, result has 20.8 percent of original size [2021-11-21 00:33:27,137 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 132 treesize of output 105 [2021-11-21 00:33:27,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:28,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:28,757 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 6 treesize of output 5 [2021-11-21 00:33:28,776 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:33:28,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:29,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:33:29,180 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 8 treesize of output 7 [2021-11-21 00:33:29,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:29,698 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:33:29,698 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 15 treesize of output 15 [2021-11-21 00:33:30,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:30,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:31,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:31,692 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:33:31,704 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 6 treesize of output 5 [2021-11-21 00:33:31,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:32,005 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 12 treesize of output 9 [2021-11-21 00:33:32,036 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 8 treesize of output 7 [2021-11-21 00:33:32,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:32,553 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:33:32,553 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 15 treesize of output 15 [2021-11-21 00:33:33,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:33,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:34,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:35,473 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:33:35,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:33:35,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:36,303 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:33:36,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 131 treesize of output 149 [2021-11-21 00:33:37,026 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:33:37,026 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:33:37,852 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:33:37,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 79 [2021-11-21 00:33:38,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:39,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:39,633 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:33:39,651 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 6 treesize of output 5 [2021-11-21 00:33:39,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:40,103 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:33:40,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 238 treesize of output 245 [2021-11-21 00:33:40,212 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:33:40,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 245 treesize of output 284 [2021-11-21 00:33:46,553 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:33:46,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 396 treesize of output 272 [2021-11-21 00:33:48,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:48,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:48,952 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 6 treesize of output 5 [2021-11-21 00:33:48,963 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:33:49,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:49,361 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:33:49,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 238 treesize of output 277 [2021-11-21 00:33:49,394 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:33:49,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 277 treesize of output 284 [2021-11-21 00:33:54,024 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:33:54,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 317 treesize of output 229 [2021-11-21 00:33:55,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:55,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:56,741 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:33:56,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:33:57,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:33:57,566 INFO L354 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2021-11-21 00:33:57,566 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 27 treesize of output 48 [2021-11-21 00:33:57,954 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:33:57,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 131 treesize of output 149 [2021-11-21 00:33:59,764 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:33:59,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 89 [2021-11-21 00:34:00,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:01,233 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 16 treesize of output 12 [2021-11-21 00:34:01,493 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:34:01,503 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 6 treesize of output 5 [2021-11-21 00:34:01,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:01,991 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:34:01,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 238 treesize of output 277 [2021-11-21 00:34:02,030 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:34:02,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 277 treesize of output 284 [2021-11-21 00:34:06,175 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:34:06,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 309 treesize of output 230 [2021-11-21 00:34:07,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:07,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:08,181 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:34:08,195 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 6 treesize of output 5 [2021-11-21 00:34:08,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:08,482 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 8 treesize of output 7 [2021-11-21 00:34:08,493 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 12 treesize of output 9 [2021-11-21 00:34:08,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:08,725 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:34:08,725 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 15 treesize of output 15 [2021-11-21 00:34:09,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:09,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:09,056 INFO L354 Elim1Store]: treesize reduction 95, result has 34.9 percent of original size [2021-11-21 00:34:09,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 199 [2021-11-21 00:34:09,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:10,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:10,672 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:34:11,500 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:34:12,498 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:34:12,498 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:34:12,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 4] total 16 [2021-11-21 00:34:12,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266569651] [2021-11-21 00:34:12,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:34:12,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 00:34:12,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 00:34:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=548, Unknown=1, NotChecked=0, Total=650 [2021-11-21 00:34:12,499 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 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) [2021-11-21 00:34:12,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:12,665 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2021-11-21 00:34:12,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:34:12,666 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-21 00:34:12,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:12,666 INFO L225 Difference]: With dead ends: 53 [2021-11-21 00:34:12,666 INFO L226 Difference]: Without dead ends: 53 [2021-11-21 00:34:12,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=126, Invalid=685, Unknown=1, NotChecked=0, Total=812 [2021-11-21 00:34:12,668 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:12,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 38 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2021-11-21 00:34:12,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-21 00:34:12,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2021-11-21 00:34:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.5) internal successors, (63), 48 states have internal predecessors, (63), 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) [2021-11-21 00:34:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2021-11-21 00:34:12,672 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 14 [2021-11-21 00:34:12,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:12,672 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2021-11-21 00:34:12,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 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) [2021-11-21 00:34:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2021-11-21 00:34:12,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:34:12,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:12,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:12,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:12,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 00:34:12,874 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:34:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash 129609067, now seen corresponding path program 1 times [2021-11-21 00:34:12,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:12,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402133144] [2021-11-21 00:34:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:12,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:34:12,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:12,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402133144] [2021-11-21 00:34:12,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402133144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:34:12,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804431432] [2021-11-21 00:34:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:12,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:34:12,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:34:12,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:34:12,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:34:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:13,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:34:13,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:34:13,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:34:13,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804431432] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:34:13,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [479341341] [2021-11-21 00:34:13,111 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 00:34:13,111 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:34:13,111 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:34:13,111 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:34:13,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:34:13,132 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 6 treesize of output 5 [2021-11-21 00:34:13,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:13,170 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 14 treesize of output 16 [2021-11-21 00:34:13,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:13,810 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:34:13,811 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 203 treesize of output 210 [2021-11-21 00:34:15,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:15,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:15,591 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 00:34:15,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:15,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:15,831 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-21 00:34:16,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:34:16,107 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 6 treesize of output 5 [2021-11-21 00:34:16,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:16,307 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 12 treesize of output 9 [2021-11-21 00:34:16,350 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 8 treesize of output 7 [2021-11-21 00:34:16,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,569 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:34:16,570 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 15 treesize of output 15 [2021-11-21 00:34:16,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,953 INFO L354 Elim1Store]: treesize reduction 105, result has 28.1 percent of original size [2021-11-21 00:34:16,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 189 [2021-11-21 00:34:17,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:17,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:18,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:34:19,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:19,169 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 8 treesize of output 7 [2021-11-21 00:34:19,179 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 12 treesize of output 9 [2021-11-21 00:34:19,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,437 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:34:19,437 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 25 treesize of output 25 [2021-11-21 00:34:19,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:19,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:19,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:19,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,814 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:34:19,814 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:34:20,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:20,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:21,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:34:22,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:22,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:34:22,276 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:34:22,277 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 90 treesize of output 99 [2021-11-21 00:34:22,317 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:34:22,318 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 93 treesize of output 102 [2021-11-21 00:34:23,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:23,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:23,473 INFO L354 Elim1Store]: treesize reduction 61, result has 20.8 percent of original size [2021-11-21 00:34:23,473 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 106 [2021-11-21 00:34:24,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:24,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:25,116 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:34:25,129 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 6 treesize of output 5 [2021-11-21 00:34:25,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:25,444 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 8 treesize of output 7 [2021-11-21 00:34:25,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:34:26,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:26,054 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:34:26,054 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 25 treesize of output 25 [2021-11-21 00:34:26,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:27,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:27,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:28,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:34:28,125 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 6 treesize of output 5 [2021-11-21 00:34:28,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:28,457 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 12 treesize of output 9 [2021-11-21 00:34:28,515 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 8 treesize of output 7 [2021-11-21 00:34:29,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:29,011 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:34:29,012 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 25 treesize of output 25 [2021-11-21 00:34:29,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:30,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:30,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:31,934 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:34:31,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:34:32,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:32,764 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:34:32,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:34:33,869 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:34:33,869 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:34:34,649 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:34:34,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 83 [2021-11-21 00:34:35,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:35,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:36,287 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:34:36,298 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 6 treesize of output 5 [2021-11-21 00:34:36,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:36,695 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:34:36,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 216 treesize of output 223 [2021-11-21 00:34:36,801 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:34:36,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 223 treesize of output 266 [2021-11-21 00:34:43,383 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:34:43,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 270 [2021-11-21 00:34:44,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:45,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:45,487 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:34:45,518 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 6 treesize of output 5 [2021-11-21 00:34:45,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:46,031 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:34:46,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:34:46,068 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:34:46,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:34:50,808 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:34:50,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 270 [2021-11-21 00:34:52,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:52,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:53,757 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:34:53,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:34:54,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:54,571 INFO L354 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2021-11-21 00:34:54,571 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 27 treesize of output 48 [2021-11-21 00:34:54,879 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:34:54,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:34:56,802 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:34:56,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 67 [2021-11-21 00:34:57,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:58,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:58,444 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:34:58,456 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 6 treesize of output 5 [2021-11-21 00:34:58,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:34:58,895 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:34:58,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:34:58,930 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:34:58,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:35:04,675 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:35:04,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 356 treesize of output 259 [2021-11-21 00:35:05,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:06,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:06,652 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:35:06,665 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 6 treesize of output 5 [2021-11-21 00:35:06,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:06,980 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 8 treesize of output 7 [2021-11-21 00:35:06,992 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 12 treesize of output 9 [2021-11-21 00:35:07,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:07,243 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:35:07,243 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 25 treesize of output 25 [2021-11-21 00:35:07,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:07,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:07,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:07,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:07,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:07,590 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:35:07,590 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:35:08,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:08,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:09,573 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:35:09,759 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:35:10,621 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:35:10,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:35:10,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2021-11-21 00:35:10,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958490598] [2021-11-21 00:35:10,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:35:10,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:35:10,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:35:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:35:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:35:10,623 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 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) [2021-11-21 00:35:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:11,037 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2021-11-21 00:35:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 00:35:11,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 00:35:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:11,038 INFO L225 Difference]: With dead ends: 133 [2021-11-21 00:35:11,039 INFO L226 Difference]: Without dead ends: 133 [2021-11-21 00:35:11,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=337, Invalid=1223, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 00:35:11,040 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 248 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:11,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 27 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:35:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-21 00:35:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 69. [2021-11-21 00:35:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 63 states have (on average 1.5873015873015872) internal successors, (100), 68 states have internal predecessors, (100), 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) [2021-11-21 00:35:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 100 transitions. [2021-11-21 00:35:11,048 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 100 transitions. Word has length 17 [2021-11-21 00:35:11,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:11,048 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 100 transitions. [2021-11-21 00:35:11,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 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) [2021-11-21 00:35:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 100 transitions. [2021-11-21 00:35:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:35:11,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:11,049 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-21 00:35:11,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:35:11,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 00:35:11,266 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:35:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash 129507266, now seen corresponding path program 1 times [2021-11-21 00:35:11,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:11,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122727206] [2021-11-21 00:35:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:11,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:35:11,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:11,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122727206] [2021-11-21 00:35:11,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122727206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:11,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:11,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:35:11,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132614479] [2021-11-21 00:35:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:11,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:35:11,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:35:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:35:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:35:11,305 INFO L87 Difference]: Start difference. First operand 69 states and 100 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-21 00:35:11,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:11,329 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2021-11-21 00:35:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:35:11,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 00:35:11,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:11,331 INFO L225 Difference]: With dead ends: 68 [2021-11-21 00:35:11,331 INFO L226 Difference]: Without dead ends: 68 [2021-11-21 00:35:11,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:35:11,332 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:11,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 11 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:35:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-21 00:35:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2021-11-21 00:35:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 59 states have internal predecessors, (80), 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) [2021-11-21 00:35:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2021-11-21 00:35:11,337 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 17 [2021-11-21 00:35:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:11,337 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2021-11-21 00:35:11,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-21 00:35:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2021-11-21 00:35:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:35:11,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:11,338 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-21 00:35:11,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:35:11,339 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:35:11,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash 129507267, now seen corresponding path program 1 times [2021-11-21 00:35:11,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:11,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907901412] [2021-11-21 00:35:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:11,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:35:11,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:11,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907901412] [2021-11-21 00:35:11,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907901412] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:35:11,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561275818] [2021-11-21 00:35:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:11,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:35:11,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:35:11,440 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:35:11,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:35:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:11,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 00:35:11,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:11,633 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-21 00:35:11,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 31 treesize of output 33 [2021-11-21 00:35:11,640 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:35:11,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2021-11-21 00:35:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:35:11,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:11,758 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 00:35:11,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:35:11,859 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:35:11,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-11-21 00:35:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:35:11,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561275818] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:35:11,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2123105916] [2021-11-21 00:35:11,962 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:35:11,963 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:35:11,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:35:11,963 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:35:11,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:35:11,992 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 6 treesize of output 5 [2021-11-21 00:35:12,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:12,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 16 [2021-11-21 00:35:12,723 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 11 [2021-11-21 00:35:12,794 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:35:12,795 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 198 treesize of output 205 [2021-11-21 00:35:14,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:14,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:14,410 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-21 00:35:14,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:14,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:14,772 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 00:35:15,138 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:35:15,149 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 6 treesize of output 5 [2021-11-21 00:35:15,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:15,421 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 8 treesize of output 7 [2021-11-21 00:35:15,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:35:15,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:15,682 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:35:15,682 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 15 treesize of output 15 [2021-11-21 00:35:16,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:16,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:16,129 INFO L354 Elim1Store]: treesize reduction 95, result has 34.9 percent of original size [2021-11-21 00:35:16,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 199 [2021-11-21 00:35:16,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:17,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:17,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:35:18,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:18,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:35:18,379 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 8 treesize of output 7 [2021-11-21 00:35:18,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:18,592 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:35:18,592 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 25 treesize of output 25 [2021-11-21 00:35:18,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:18,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:18,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:18,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:18,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:18,874 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:35:18,875 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:35:19,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:19,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:20,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:35:21,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:35:21,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-21 00:35:21,336 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:35:21,336 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 90 treesize of output 99 [2021-11-21 00:35:21,371 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:35:21,372 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 93 treesize of output 102 [2021-11-21 00:35:22,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:22,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:22,448 INFO L354 Elim1Store]: treesize reduction 51, result has 17.7 percent of original size [2021-11-21 00:35:22,448 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 101 [2021-11-21 00:35:23,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:23,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:24,083 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 6 treesize of output 5 [2021-11-21 00:35:24,092 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:35:24,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:24,412 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 8 treesize of output 7 [2021-11-21 00:35:24,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:35:24,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:24,827 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:35:24,827 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 15 treesize of output 15 [2021-11-21 00:35:25,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:26,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:26,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:26,851 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 6 treesize of output 5 [2021-11-21 00:35:26,865 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:35:27,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:27,232 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 12 treesize of output 9 [2021-11-21 00:35:27,255 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 8 treesize of output 7 [2021-11-21 00:35:27,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:35:27,749 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:35:27,750 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 25 treesize of output 25 [2021-11-21 00:35:28,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:28,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:29,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:30,710 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:35:30,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:35:31,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:31,451 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:35:31,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:35:31,986 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:35:31,986 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:35:32,761 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:35:32,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 67 [2021-11-21 00:35:33,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:34,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:34,511 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:35:34,525 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 6 treesize of output 5 [2021-11-21 00:35:34,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:34,915 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:35:34,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 216 treesize of output 223 [2021-11-21 00:35:35,019 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:35:35,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 223 treesize of output 266 [2021-11-21 00:35:40,075 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:35:40,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 366 treesize of output 269 [2021-11-21 00:35:41,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:41,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:42,138 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 6 treesize of output 5 [2021-11-21 00:35:42,148 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:35:42,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:42,565 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:35:42,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:35:42,599 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:35:42,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:35:48,094 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:35:48,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 375 treesize of output 278 [2021-11-21 00:35:49,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:50,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:50,890 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:35:50,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:35:51,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:51,703 INFO L354 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2021-11-21 00:35:51,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 48 [2021-11-21 00:35:51,988 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:35:51,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:35:53,382 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:35:53,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 67 [2021-11-21 00:35:54,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:54,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:54,811 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 6 treesize of output 5 [2021-11-21 00:35:54,824 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:35:55,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:35:55,285 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:35:55,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:35:55,317 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:35:55,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:35:59,460 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:35:59,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 270 [2021-11-21 00:36:00,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:01,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:01,617 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:36:01,630 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 6 treesize of output 5 [2021-11-21 00:36:01,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:01,805 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 8 treesize of output 7 [2021-11-21 00:36:01,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:36:02,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:02,073 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:36:02,073 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 15 treesize of output 15 [2021-11-21 00:36:02,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:02,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:02,407 INFO L354 Elim1Store]: treesize reduction 95, result has 34.9 percent of original size [2021-11-21 00:36:02,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 199 [2021-11-21 00:36:03,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:03,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:04,563 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:36:04,709 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:36:05,705 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:36:05,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:36:05,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-11-21 00:36:05,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043272196] [2021-11-21 00:36:05,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:36:05,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 00:36:05,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:36:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 00:36:05,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:36:05,707 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2021-11-21 00:36:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:36:06,102 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2021-11-21 00:36:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:36:06,103 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 00:36:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:36:06,103 INFO L225 Difference]: With dead ends: 106 [2021-11-21 00:36:06,104 INFO L226 Difference]: Without dead ends: 106 [2021-11-21 00:36:06,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 00:36:06,105 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:36:06,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 146 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2021-11-21 00:36:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-21 00:36:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2021-11-21 00:36:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.5157894736842106) internal successors, (144), 99 states have internal predecessors, (144), 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) [2021-11-21 00:36:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 144 transitions. [2021-11-21 00:36:06,110 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 144 transitions. Word has length 17 [2021-11-21 00:36:06,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:36:06,111 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 144 transitions. [2021-11-21 00:36:06,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2021-11-21 00:36:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 144 transitions. [2021-11-21 00:36:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 00:36:06,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:36:06,112 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 00:36:06,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-21 00:36:06,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:36:06,338 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:36:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:36:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash -280242057, now seen corresponding path program 1 times [2021-11-21 00:36:06,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:36:06,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698668160] [2021-11-21 00:36:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:06,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:36:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:36:06,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:36:06,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698668160] [2021-11-21 00:36:06,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698668160] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:36:06,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110030410] [2021-11-21 00:36:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:06,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:36:06,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:36:06,411 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:36:06,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:36:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:06,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:36:06,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:36:06,505 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 12 treesize of output 11 [2021-11-21 00:36:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:36:06,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:36:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:36:06,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110030410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:36:06,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1415207684] [2021-11-21 00:36:06,599 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:36:06,599 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:36:06,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:36:06,599 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:36:06,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:36:06,610 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 6 treesize of output 5 [2021-11-21 00:36:06,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:36:06,673 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 14 treesize of output 16 [2021-11-21 00:36:07,071 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 11 [2021-11-21 00:36:07,315 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:36:07,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 205 [2021-11-21 00:36:08,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:08,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:36:08,747 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-21 00:36:09,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:09,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:36:09,074 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-11-21 00:36:09,344 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 6 treesize of output 5 [2021-11-21 00:36:09,356 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:36:09,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:09,647 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 8 treesize of output 7 [2021-11-21 00:36:09,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:36:09,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:09,898 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:36:09,898 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 15 treesize of output 15 [2021-11-21 00:36:10,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:10,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:10,261 INFO L354 Elim1Store]: treesize reduction 95, result has 34.9 percent of original size [2021-11-21 00:36:10,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 199 [2021-11-21 00:36:10,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:11,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:11,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:36:12,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:12,290 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 8 treesize of output 7 [2021-11-21 00:36:12,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:36:12,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:12,569 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:36:12,569 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 25 treesize of output 25 [2021-11-21 00:36:12,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:36:12,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:36:12,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:36:12,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:12,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:12,871 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:36:12,871 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:36:13,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:13,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:14,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:36:14,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:36:14,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:36:15,172 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:36:15,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 90 treesize of output 99 [2021-11-21 00:36:15,201 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:36:15,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 102 [2021-11-21 00:36:16,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:16,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:16,123 INFO L354 Elim1Store]: treesize reduction 61, result has 20.8 percent of original size [2021-11-21 00:36:16,123 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 103 [2021-11-21 00:36:16,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:17,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:17,516 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 6 treesize of output 5 [2021-11-21 00:36:17,529 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:36:17,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:17,839 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 8 treesize of output 7 [2021-11-21 00:36:17,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:36:18,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:18,364 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:36:18,365 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 25 treesize of output 25 [2021-11-21 00:36:18,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:19,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:19,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:20,280 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:36:20,290 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 6 treesize of output 5 [2021-11-21 00:36:20,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:20,493 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 12 treesize of output 9 [2021-11-21 00:36:20,612 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 8 treesize of output 7 [2021-11-21 00:36:21,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:21,043 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:36:21,043 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 15 treesize of output 15 [2021-11-21 00:36:21,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:22,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:22,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:23,823 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:36:23,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:36:24,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:24,600 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:36:24,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:36:25,517 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:36:25,518 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:36:26,363 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:36:26,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 77 [2021-11-21 00:36:27,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:27,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:27,992 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 6 treesize of output 5 [2021-11-21 00:36:28,020 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:36:28,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:28,511 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:36:28,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:36:28,547 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:36:28,547 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 259 treesize of output 266 [2021-11-21 00:36:37,478 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:36:37,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 454 treesize of output 321 [2021-11-21 00:36:38,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:39,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:39,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:36:39,761 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 6 treesize of output 5 [2021-11-21 00:36:39,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:40,103 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:36:40,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:36:40,137 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:36:40,137 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 259 treesize of output 266 [2021-11-21 00:36:46,422 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:36:46,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 453 treesize of output 320 [2021-11-21 00:36:47,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:48,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:49,325 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:36:49,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:36:50,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:50,256 INFO L354 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2021-11-21 00:36:50,257 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 27 treesize of output 48 [2021-11-21 00:36:50,582 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:36:50,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:36:51,887 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:36:51,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 77 [2021-11-21 00:36:52,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:53,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:53,421 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 6 treesize of output 5 [2021-11-21 00:36:53,430 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:36:53,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:36:53,903 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:36:53,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:36:53,939 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:36:53,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:36:58,602 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:36:58,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 463 treesize of output 330 [2021-11-21 00:37:00,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:00,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:00,859 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:37:00,868 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 6 treesize of output 5 [2021-11-21 00:37:01,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:01,117 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 12 treesize of output 9 [2021-11-21 00:37:01,138 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 8 treesize of output 7 [2021-11-21 00:37:01,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:01,385 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:37:01,385 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 15 treesize of output 15 [2021-11-21 00:37:01,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:01,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:01,729 INFO L354 Elim1Store]: treesize reduction 95, result has 34.9 percent of original size [2021-11-21 00:37:01,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 199 [2021-11-21 00:37:02,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:02,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:03,816 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:37:04,037 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:37:04,887 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:37:04,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:37:04,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-21 00:37:04,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632712099] [2021-11-21 00:37:04,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:37:04,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:37:04,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:04,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:37:04,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:37:04,889 INFO L87 Difference]: Start difference. First operand 100 states and 144 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-11-21 00:37:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:05,018 INFO L93 Difference]: Finished difference Result 164 states and 233 transitions. [2021-11-21 00:37:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:37:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 00:37:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:05,020 INFO L225 Difference]: With dead ends: 164 [2021-11-21 00:37:05,020 INFO L226 Difference]: Without dead ends: 164 [2021-11-21 00:37:05,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:37:05,021 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 53 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:05,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 12 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:37:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-21 00:37:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 120. [2021-11-21 00:37:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.5043478260869565) internal successors, (173), 119 states have internal predecessors, (173), 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) [2021-11-21 00:37:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 173 transitions. [2021-11-21 00:37:05,029 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 173 transitions. Word has length 18 [2021-11-21 00:37:05,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:05,030 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 173 transitions. [2021-11-21 00:37:05,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-11-21 00:37:05,030 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 173 transitions. [2021-11-21 00:37:05,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:37:05,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:05,031 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 00:37:05,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:37:05,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-21 00:37:05,257 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:37:05,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1357807796, now seen corresponding path program 2 times [2021-11-21 00:37:05,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:05,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288718457] [2021-11-21 00:37:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:05,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:37:05,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:05,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288718457] [2021-11-21 00:37:05,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288718457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:05,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:05,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:37:05,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975524399] [2021-11-21 00:37:05,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:05,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:37:05,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:05,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:37:05,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:37:05,322 INFO L87 Difference]: Start difference. First operand 120 states and 173 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:37:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:05,364 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2021-11-21 00:37:05,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:37:05,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-21 00:37:05,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:05,366 INFO L225 Difference]: With dead ends: 128 [2021-11-21 00:37:05,366 INFO L226 Difference]: Without dead ends: 121 [2021-11-21 00:37:05,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:05,367 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:05,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 26 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:37:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-21 00:37:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2021-11-21 00:37:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.4434782608695653) internal successors, (166), 119 states have internal predecessors, (166), 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) [2021-11-21 00:37:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2021-11-21 00:37:05,377 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 20 [2021-11-21 00:37:05,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:05,377 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2021-11-21 00:37:05,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:37:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2021-11-21 00:37:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:37:05,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:05,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-21 00:37:05,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 00:37:05,378 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:37:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:05,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1270399369, now seen corresponding path program 2 times [2021-11-21 00:37:05,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:05,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776383297] [2021-11-21 00:37:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:05,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:37:05,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:05,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776383297] [2021-11-21 00:37:05,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776383297] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:37:05,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455647251] [2021-11-21 00:37:05,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:37:05,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:37:05,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:37:05,532 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:37:05,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 00:37:05,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:37:05,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:37:05,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-21 00:37:05,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:37:05,672 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-21 00:37:05,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 35 [2021-11-21 00:37:05,679 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:37:05,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-11-21 00:37:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:37:05,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:37:06,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2021-11-21 00:37:06,181 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 00:37:06,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 74 [2021-11-21 00:37:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:37:06,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455647251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:37:06,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [98921362] [2021-11-21 00:37:06,244 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:37:06,244 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:37:06,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:37:06,244 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:37:06,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:37:06,272 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 6 treesize of output 5 [2021-11-21 00:37:06,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:06,326 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 14 treesize of output 16 [2021-11-21 00:37:06,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:07,030 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:37:07,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 210 [2021-11-21 00:37:09,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:09,207 INFO L354 Elim1Store]: treesize reduction 97, result has 14.2 percent of original size [2021-11-21 00:37:09,207 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 221 [2021-11-21 00:37:09,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:09,512 INFO L354 Elim1Store]: treesize reduction 97, result has 14.2 percent of original size [2021-11-21 00:37:09,513 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 221 [2021-11-21 00:37:09,998 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 6 treesize of output 5 [2021-11-21 00:37:10,009 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:37:10,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:10,194 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 8 treesize of output 7 [2021-11-21 00:37:10,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:37:10,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:10,451 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:37:10,451 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 25 treesize of output 25 [2021-11-21 00:37:10,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:10,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:10,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:10,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:10,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:10,805 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:37:10,806 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:37:11,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:11,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:12,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:37:12,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:12,890 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 8 treesize of output 7 [2021-11-21 00:37:12,901 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 12 treesize of output 9 [2021-11-21 00:37:13,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:13,135 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:37:13,135 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 25 treesize of output 25 [2021-11-21 00:37:13,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:13,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:13,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:13,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:13,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:13,452 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:37:13,452 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:37:14,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:14,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:15,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:37:15,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:15,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:37:15,942 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:37:15,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 90 treesize of output 99 [2021-11-21 00:37:15,973 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:37:15,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 102 [2021-11-21 00:37:16,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:16,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:16,845 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-21 00:37:16,845 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 113 [2021-11-21 00:37:17,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:18,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:18,476 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 6 treesize of output 5 [2021-11-21 00:37:18,490 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:37:18,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:18,798 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 8 treesize of output 7 [2021-11-21 00:37:18,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:37:19,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:19,348 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:37:19,348 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 25 treesize of output 25 [2021-11-21 00:37:19,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:20,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:21,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:21,263 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:37:21,273 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 6 treesize of output 5 [2021-11-21 00:37:21,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:21,550 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 8 treesize of output 7 [2021-11-21 00:37:21,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:37:22,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:22,112 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:37:22,112 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 25 treesize of output 25 [2021-11-21 00:37:22,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:23,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:23,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:25,027 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:37:25,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:37:25,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:25,911 INFO L354 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2021-11-21 00:37:25,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 48 [2021-11-21 00:37:26,269 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:37:26,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 131 treesize of output 149 [2021-11-21 00:37:28,466 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:37:28,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 89 [2021-11-21 00:37:29,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:29,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:30,164 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:37:30,176 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 6 treesize of output 5 [2021-11-21 00:37:30,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:30,654 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:37:30,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 238 treesize of output 277 [2021-11-21 00:37:30,690 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:37:30,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 277 treesize of output 284 [2021-11-21 00:37:35,350 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:37:35,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 396 treesize of output 272 [2021-11-21 00:37:36,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:37,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:37,509 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 6 treesize of output 5 [2021-11-21 00:37:37,519 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:37:37,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:37,869 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:37:37,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 238 treesize of output 277 [2021-11-21 00:37:37,905 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:37:37,906 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 277 treesize of output 284 [2021-11-21 00:37:42,415 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:37:42,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 388 treesize of output 273 [2021-11-21 00:37:43,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:44,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:45,132 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:37:45,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:37:45,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:45,946 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:37:45,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:37:46,771 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:37:46,771 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:37:47,579 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:37:47,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 67 [2021-11-21 00:37:48,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:48,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:49,189 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:37:49,201 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 6 treesize of output 5 [2021-11-21 00:37:49,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:49,582 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:37:49,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:37:49,617 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:37:49,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:37:56,169 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:37:56,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 458 treesize of output 325 [2021-11-21 00:37:57,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:58,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:58,479 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 6 treesize of output 5 [2021-11-21 00:37:58,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:37:58,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:37:58,728 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 8 treesize of output 7 [2021-11-21 00:37:58,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:37:58,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:59,005 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:37:59,005 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 25 treesize of output 25 [2021-11-21 00:37:59,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:59,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:59,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:59,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:59,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:59,292 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:37:59,293 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:37:59,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:00,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:01,595 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:38:01,779 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:38:02,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:38:02,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:38:02,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2021-11-21 00:38:02,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790051101] [2021-11-21 00:38:02,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:38:02,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 00:38:02,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:02,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 00:38:02,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2021-11-21 00:38:02,897 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 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) [2021-11-21 00:38:03,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:03,588 INFO L93 Difference]: Finished difference Result 127 states and 162 transitions. [2021-11-21 00:38:03,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 00:38:03,588 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-21 00:38:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:03,589 INFO L225 Difference]: With dead ends: 127 [2021-11-21 00:38:03,589 INFO L226 Difference]: Without dead ends: 127 [2021-11-21 00:38:03,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=349, Invalid=1543, Unknown=0, NotChecked=0, Total=1892 [2021-11-21 00:38:03,591 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:03,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 131 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2021-11-21 00:38:03,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-21 00:38:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 83. [2021-11-21 00:38:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 82 states have internal predecessors, (104), 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) [2021-11-21 00:38:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2021-11-21 00:38:03,595 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 20 [2021-11-21 00:38:03,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:03,595 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2021-11-21 00:38:03,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 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) [2021-11-21 00:38:03,595 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2021-11-21 00:38:03,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 00:38:03,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:03,596 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1] [2021-11-21 00:38:03,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:38:03,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:03,797 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:38:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash -696762066, now seen corresponding path program 3 times [2021-11-21 00:38:03,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:03,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989060759] [2021-11-21 00:38:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:03,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:38:03,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989060759] [2021-11-21 00:38:03,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989060759] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:38:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756100134] [2021-11-21 00:38:03,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:38:03,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:03,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:38:03,881 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:38:03,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 00:38:03,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:38:03,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:38:03,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-21 00:38:03,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:38:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:38:04,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:38:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:38:04,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756100134] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:38:04,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [17348155] [2021-11-21 00:38:04,286 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:38:04,286 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:38:04,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:38:04,287 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:38:04,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:38:04,305 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 6 treesize of output 5 [2021-11-21 00:38:04,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:04,380 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 14 treesize of output 16 [2021-11-21 00:38:04,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:05,058 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:38:05,059 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 203 treesize of output 210 [2021-11-21 00:38:06,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:06,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:06,692 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 00:38:07,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:07,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:07,031 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 00:38:07,203 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 6 treesize of output 5 [2021-11-21 00:38:07,218 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:38:07,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:07,472 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 8 treesize of output 7 [2021-11-21 00:38:07,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:38:07,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:07,764 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:38:07,764 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 25 treesize of output 25 [2021-11-21 00:38:08,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:08,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:08,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:08,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:08,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:08,067 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:38:08,068 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:38:08,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:09,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:09,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:38:10,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:10,349 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 8 treesize of output 7 [2021-11-21 00:38:10,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:38:10,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:10,654 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:38:10,655 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 15 treesize of output 15 [2021-11-21 00:38:10,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:10,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:10,974 INFO L354 Elim1Store]: treesize reduction 105, result has 28.1 percent of original size [2021-11-21 00:38:10,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 189 [2021-11-21 00:38:11,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:12,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:13,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:38:13,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:38:13,720 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:38:13,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 90 treesize of output 99 [2021-11-21 00:38:13,763 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:38:13,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 102 [2021-11-21 00:38:14,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:14,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:14,830 INFO L354 Elim1Store]: treesize reduction 61, result has 20.8 percent of original size [2021-11-21 00:38:14,831 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 103 [2021-11-21 00:38:15,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:16,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:16,543 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 6 treesize of output 5 [2021-11-21 00:38:16,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:38:16,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:16,755 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 8 treesize of output 7 [2021-11-21 00:38:16,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:38:17,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:17,282 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:38:17,282 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 25 treesize of output 25 [2021-11-21 00:38:17,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:18,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:19,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:19,332 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:38:19,345 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 6 treesize of output 5 [2021-11-21 00:38:19,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:19,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:38:19,712 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 8 treesize of output 7 [2021-11-21 00:38:20,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:20,181 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:38:20,182 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 25 treesize of output 25 [2021-11-21 00:38:20,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:21,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:21,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:23,009 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:38:23,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:38:23,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:23,791 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:38:23,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:38:24,473 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:38:24,473 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:38:25,189 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:38:25,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 77 [2021-11-21 00:38:26,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:26,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:26,878 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 6 treesize of output 5 [2021-11-21 00:38:26,888 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:38:27,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:27,233 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:38:27,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:38:27,267 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:38:27,267 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 259 treesize of output 266 [2021-11-21 00:38:31,063 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:38:31,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 356 treesize of output 259 [2021-11-21 00:38:32,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:32,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:33,118 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 6 treesize of output 5 [2021-11-21 00:38:33,132 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:38:33,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:33,613 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:38:33,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:38:33,651 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:38:33,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:38:38,142 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:38:38,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 357 treesize of output 260 [2021-11-21 00:38:39,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:40,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:40,898 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:38:40,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:38:41,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:41,683 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:38:41,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:38:42,453 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:38:42,453 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:38:43,319 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:38:43,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 77 [2021-11-21 00:38:44,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:44,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:44,856 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 6 treesize of output 5 [2021-11-21 00:38:44,870 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:38:45,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:45,396 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:38:45,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:38:45,432 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:38:45,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:38:50,309 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:38:50,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 366 treesize of output 269 [2021-11-21 00:38:51,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:52,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:52,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:38:52,425 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 6 treesize of output 5 [2021-11-21 00:38:52,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:52,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:38:52,719 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 8 treesize of output 7 [2021-11-21 00:38:52,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:52,942 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:38:52,942 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 25 treesize of output 25 [2021-11-21 00:38:53,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:53,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:53,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:53,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:53,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:53,264 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:38:53,265 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:38:53,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:54,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:55,250 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:38:55,548 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:38:56,511 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:38:56,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:38:56,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2021-11-21 00:38:56,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773687866] [2021-11-21 00:38:56,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:38:56,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 00:38:56,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 00:38:56,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:38:56,512 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 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) [2021-11-21 00:38:56,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:56,901 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2021-11-21 00:38:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 00:38:56,902 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-21 00:38:56,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:56,902 INFO L225 Difference]: With dead ends: 82 [2021-11-21 00:38:56,903 INFO L226 Difference]: Without dead ends: 82 [2021-11-21 00:38:56,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=277, Invalid=1283, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 00:38:56,904 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 57 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:56,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 8 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:38:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-21 00:38:56,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2021-11-21 00:38:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 77 states have internal predecessors, (92), 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) [2021-11-21 00:38:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2021-11-21 00:38:56,907 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 23 [2021-11-21 00:38:56,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:56,908 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2021-11-21 00:38:56,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 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) [2021-11-21 00:38:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2021-11-21 00:38:56,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 00:38:56,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:56,909 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2021-11-21 00:38:56,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-21 00:38:57,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:57,114 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:38:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1460518455, now seen corresponding path program 2 times [2021-11-21 00:38:57,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:57,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613137283] [2021-11-21 00:38:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:57,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:38:57,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:57,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613137283] [2021-11-21 00:38:57,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613137283] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:38:57,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562249408] [2021-11-21 00:38:57,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:38:57,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:57,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:38:57,193 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:38:57,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 00:38:57,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 00:38:57,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:38:57,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 00:38:57,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:38:57,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-21 00:38:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:38:57,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:38:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:38:57,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562249408] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:38:57,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [789766043] [2021-11-21 00:38:57,717 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:38:57,717 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:38:57,718 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:38:57,718 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:38:57,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:38:57,731 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 6 treesize of output 5 [2021-11-21 00:38:57,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:57,826 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 14 treesize of output 16 [2021-11-21 00:38:58,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:38:58,577 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:38:58,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 210 [2021-11-21 00:39:00,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:00,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:00,222 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 00:39:00,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:00,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:00,411 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 00:39:00,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:39:00,789 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 6 treesize of output 5 [2021-11-21 00:39:00,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:00,980 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 12 treesize of output 9 [2021-11-21 00:39:00,993 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 8 treesize of output 7 [2021-11-21 00:39:01,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:01,245 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:39:01,246 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 25 treesize of output 25 [2021-11-21 00:39:01,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:01,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:01,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:01,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:01,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:01,663 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:39:01,664 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:39:02,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:02,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:03,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:39:03,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:03,842 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 8 treesize of output 7 [2021-11-21 00:39:03,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:39:04,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:04,067 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:39:04,067 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 25 treesize of output 25 [2021-11-21 00:39:04,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:04,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:04,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:04,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:04,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:04,379 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:39:04,379 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:39:04,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:05,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:06,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:39:06,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:06,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:39:06,759 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:39:06,759 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 90 treesize of output 99 [2021-11-21 00:39:06,794 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:39:06,794 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 93 treesize of output 102 [2021-11-21 00:39:07,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:07,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:07,812 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-21 00:39:07,812 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 113 [2021-11-21 00:39:08,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:09,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:09,584 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:39:09,595 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 6 treesize of output 5 [2021-11-21 00:39:09,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:09,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:39:10,018 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 8 treesize of output 7 [2021-11-21 00:39:10,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:10,487 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:39:10,487 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 15 treesize of output 15 [2021-11-21 00:39:11,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:11,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:12,299 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 16 treesize of output 12 [2021-11-21 00:39:12,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:39:12,580 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 6 treesize of output 5 [2021-11-21 00:39:12,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:12,863 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 8 treesize of output 7 [2021-11-21 00:39:12,886 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 12 treesize of output 9 [2021-11-21 00:39:13,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:13,434 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:39:13,435 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 15 treesize of output 15 [2021-11-21 00:39:14,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:14,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:15,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:16,527 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:39:16,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:39:17,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:17,463 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:39:17,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 131 treesize of output 149 [2021-11-21 00:39:18,316 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:39:18,316 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:39:19,457 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:39:19,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 79 [2021-11-21 00:39:20,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:20,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:21,137 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 6 treesize of output 5 [2021-11-21 00:39:21,148 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:39:21,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:21,695 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:39:21,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 238 treesize of output 245 [2021-11-21 00:39:21,821 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:39:21,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 245 treesize of output 284 [2021-11-21 00:39:26,894 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:39:26,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 325 treesize of output 246 [2021-11-21 00:39:28,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:28,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:28,896 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 6 treesize of output 5 [2021-11-21 00:39:28,904 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:39:29,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:29,334 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:39:29,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 238 treesize of output 277 [2021-11-21 00:39:29,371 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:39:29,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 277 treesize of output 284 [2021-11-21 00:39:35,881 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:39:35,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 453 treesize of output 320 [2021-11-21 00:39:37,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:38,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:39,240 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:39:39,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:39:39,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:40,135 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:39:40,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:39:40,804 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:39:40,804 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:39:41,771 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:39:41,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 77 [2021-11-21 00:39:42,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:43,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:43,721 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 6 treesize of output 5 [2021-11-21 00:39:43,732 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:39:43,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:44,217 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:39:44,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:39:44,254 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:39:44,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:39:50,086 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:39:50,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 357 treesize of output 260 [2021-11-21 00:39:51,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:52,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:52,238 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 6 treesize of output 5 [2021-11-21 00:39:52,252 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:39:52,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:52,513 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 8 treesize of output 7 [2021-11-21 00:39:52,525 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 12 treesize of output 9 [2021-11-21 00:39:52,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:52,756 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:39:52,757 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 15 treesize of output 15 [2021-11-21 00:39:53,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:53,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:53,134 INFO L354 Elim1Store]: treesize reduction 95, result has 34.9 percent of original size [2021-11-21 00:39:53,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 199 [2021-11-21 00:39:53,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:54,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:55,179 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:39:55,414 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:39:56,422 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:39:56,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:39:56,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 15 [2021-11-21 00:39:56,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470449040] [2021-11-21 00:39:56,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:39:56,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 00:39:56,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 00:39:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-11-21 00:39:56,423 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 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) [2021-11-21 00:39:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:57,018 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2021-11-21 00:39:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 00:39:57,020 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-21 00:39:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:57,020 INFO L225 Difference]: With dead ends: 75 [2021-11-21 00:39:57,021 INFO L226 Difference]: Without dead ends: 75 [2021-11-21 00:39:57,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=360, Invalid=1710, Unknown=0, NotChecked=0, Total=2070 [2021-11-21 00:39:57,022 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 72 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:57,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 14 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:39:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-21 00:39:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2021-11-21 00:39:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 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) [2021-11-21 00:39:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-11-21 00:39:57,024 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 24 [2021-11-21 00:39:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:57,025 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-11-21 00:39:57,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 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) [2021-11-21 00:39:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-11-21 00:39:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-21 00:39:57,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:57,026 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1] [2021-11-21 00:39:57,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-21 00:39:57,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-21 00:39:57,238 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:39:57,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1391743203, now seen corresponding path program 2 times [2021-11-21 00:39:57,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:57,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726994096] [2021-11-21 00:39:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:57,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-21 00:39:57,354 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:57,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726994096] [2021-11-21 00:39:57,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726994096] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:39:57,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795547384] [2021-11-21 00:39:57,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:39:57,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:39:57,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:39:57,355 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:39:57,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-21 00:39:57,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:39:57,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:39:57,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:39:57,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:39:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 69 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-21 00:39:57,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:39:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 69 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-21 00:39:57,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795547384] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:39:57,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1723999622] [2021-11-21 00:39:57,630 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:39:57,630 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:39:57,630 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:39:57,630 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:39:57,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:39:57,656 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 6 treesize of output 5 [2021-11-21 00:39:57,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:57,693 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 14 treesize of output 16 [2021-11-21 00:39:58,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:39:58,445 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:39:58,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 210 [2021-11-21 00:40:00,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:00,686 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-21 00:40:00,686 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 214 [2021-11-21 00:40:00,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:01,000 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-21 00:40:01,000 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 214 [2021-11-21 00:40:01,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:40:01,502 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 6 treesize of output 5 [2021-11-21 00:40:01,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:01,812 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 12 treesize of output 9 [2021-11-21 00:40:01,831 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 8 treesize of output 7 [2021-11-21 00:40:02,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:02,134 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:40:02,134 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 25 treesize of output 25 [2021-11-21 00:40:02,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:02,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:02,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:02,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:02,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:02,442 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:40:02,442 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:40:03,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:03,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:04,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:40:04,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:04,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:40:04,784 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 8 treesize of output 7 [2021-11-21 00:40:05,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:05,036 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:40:05,037 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 25 treesize of output 25 [2021-11-21 00:40:05,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:05,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:05,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:05,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:05,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:05,380 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:40:05,380 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:40:06,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:06,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:07,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:40:07,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:07,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:40:08,139 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:40:08,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 90 treesize of output 99 [2021-11-21 00:40:08,176 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:40:08,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 102 [2021-11-21 00:40:09,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:09,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:09,311 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-21 00:40:09,311 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 116 [2021-11-21 00:40:10,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:10,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:11,240 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:40:11,259 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 6 treesize of output 5 [2021-11-21 00:40:11,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:11,523 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 12 treesize of output 9 [2021-11-21 00:40:11,546 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 8 treesize of output 7 [2021-11-21 00:40:12,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:12,091 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:40:12,093 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 15 treesize of output 15 [2021-11-21 00:40:12,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:13,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:14,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:14,437 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 6 treesize of output 5 [2021-11-21 00:40:14,448 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:40:14,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:14,717 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 12 treesize of output 9 [2021-11-21 00:40:14,779 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 8 treesize of output 7 [2021-11-21 00:40:15,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:15,377 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:40:15,378 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 25 treesize of output 25 [2021-11-21 00:40:15,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:16,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:17,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:18,805 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:40:18,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:40:19,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:19,557 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:40:19,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:40:20,158 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:40:20,159 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:40:21,159 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:40:21,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 67 [2021-11-21 00:40:22,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:22,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:23,014 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:40:23,027 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 6 treesize of output 5 [2021-11-21 00:40:23,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:23,471 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:40:23,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:40:23,509 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:40:23,510 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 259 treesize of output 266 [2021-11-21 00:40:29,083 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:40:29,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 270 [2021-11-21 00:40:30,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:31,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:31,584 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 6 treesize of output 5 [2021-11-21 00:40:31,594 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:40:31,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:32,073 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:40:32,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 216 treesize of output 259 [2021-11-21 00:40:32,121 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:40:32,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 266 [2021-11-21 00:40:36,885 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:40:36,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 388 treesize of output 273 [2021-11-21 00:40:38,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:38,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:40,204 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:40:40,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:40:41,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:41,276 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:40:41,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 131 treesize of output 149 [2021-11-21 00:40:42,097 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:40:42,098 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:40:43,065 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:40:43,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 86 [2021-11-21 00:40:44,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:44,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:44,996 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 6 treesize of output 5 [2021-11-21 00:40:45,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:40:45,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:45,505 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:40:45,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 238 treesize of output 245 [2021-11-21 00:40:45,643 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:40:45,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 245 treesize of output 284 [2021-11-21 00:40:53,025 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:40:53,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 406 treesize of output 282 [2021-11-21 00:40:54,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:55,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:55,684 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:40:55,702 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 6 treesize of output 5 [2021-11-21 00:40:55,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:56,049 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 12 treesize of output 9 [2021-11-21 00:40:56,095 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 8 treesize of output 7 [2021-11-21 00:40:56,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:56,449 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:40:56,450 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 25 treesize of output 25 [2021-11-21 00:40:56,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:56,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:56,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:56,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:56,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:56,851 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:40:56,851 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:40:57,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:58,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:40:58,853 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:40:59,795 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:41:00,957 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:41:00,957 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:41:00,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-21 00:41:00,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457894695] [2021-11-21 00:41:00,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:41:00,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:41:00,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:41:00,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:41:00,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:41:00,959 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2021-11-21 00:41:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:41:01,174 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2021-11-21 00:41:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:41:01,175 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-21 00:41:01,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:41:01,175 INFO L225 Difference]: With dead ends: 81 [2021-11-21 00:41:01,175 INFO L226 Difference]: Without dead ends: 81 [2021-11-21 00:41:01,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2021-11-21 00:41:01,176 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:41:01,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:41:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-21 00:41:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2021-11-21 00:41:01,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.16) internal successors, (87), 76 states have internal predecessors, (87), 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) [2021-11-21 00:41:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-11-21 00:41:01,180 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 38 [2021-11-21 00:41:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:41:01,180 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-11-21 00:41:01,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2021-11-21 00:41:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-11-21 00:41:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-21 00:41:01,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:41:01,182 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 1, 1] [2021-11-21 00:41:01,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-21 00:41:01,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-21 00:41:01,386 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:41:01,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:41:01,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1721743199, now seen corresponding path program 3 times [2021-11-21 00:41:01,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:41:01,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540365473] [2021-11-21 00:41:01,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:41:01,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:41:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:41:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 64 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:41:01,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:41:01,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540365473] [2021-11-21 00:41:01,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540365473] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:41:01,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004389149] [2021-11-21 00:41:01,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:41:01,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:41:01,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:41:01,542 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:41:01,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-21 00:41:01,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:41:01,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:41:01,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:41:01,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:41:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 64 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:41:01,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:41:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 64 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:41:01,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004389149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:41:01,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [445856601] [2021-11-21 00:41:01,940 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:41:01,940 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:41:01,940 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:41:01,941 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:41:01,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:41:01,961 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 6 treesize of output 5 [2021-11-21 00:41:02,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:41:02,036 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 14 treesize of output 16 [2021-11-21 00:41:02,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:02,844 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:41:02,845 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 203 treesize of output 210 [2021-11-21 00:41:05,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:05,601 INFO L354 Elim1Store]: treesize reduction 97, result has 14.2 percent of original size [2021-11-21 00:41:05,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 221 [2021-11-21 00:41:05,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:05,955 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-21 00:41:05,956 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 220 [2021-11-21 00:41:06,645 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:41:06,658 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 6 treesize of output 5 [2021-11-21 00:41:06,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:06,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:41:06,916 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 8 treesize of output 7 [2021-11-21 00:41:07,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:07,214 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:41:07,214 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 15 treesize of output 15 [2021-11-21 00:41:07,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:07,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:07,661 INFO L354 Elim1Store]: treesize reduction 105, result has 28.1 percent of original size [2021-11-21 00:41:07,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 189 [2021-11-21 00:41:08,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:08,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:09,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:41:10,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:10,394 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 8 treesize of output 7 [2021-11-21 00:41:10,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:41:10,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:10,776 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:41:10,777 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 15 treesize of output 15 [2021-11-21 00:41:11,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:11,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:11,136 INFO L354 Elim1Store]: treesize reduction 95, result has 34.9 percent of original size [2021-11-21 00:41:11,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 199 [2021-11-21 00:41:12,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:12,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:13,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:41:14,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:41:14,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 00:41:14,207 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:41:14,207 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 90 treesize of output 99 [2021-11-21 00:41:14,238 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:41:14,238 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 93 treesize of output 102 [2021-11-21 00:41:15,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:15,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:15,306 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-21 00:41:15,306 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 113 [2021-11-21 00:41:16,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:16,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:16,852 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 6 treesize of output 5 [2021-11-21 00:41:16,864 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:41:16,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:17,158 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 8 treesize of output 7 [2021-11-21 00:41:17,177 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 12 treesize of output 9 [2021-11-21 00:41:17,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:17,699 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:41:17,700 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 25 treesize of output 25 [2021-11-21 00:41:18,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:18,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:19,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:19,902 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:41:19,912 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 6 treesize of output 5 [2021-11-21 00:41:20,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:20,151 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 8 treesize of output 7 [2021-11-21 00:41:20,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:41:20,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:41:20,941 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:41:20,941 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 25 treesize of output 25 [2021-11-21 00:41:21,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:22,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:22,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:24,107 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:41:24,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:41:24,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:25,071 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:41:25,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 131 treesize of output 149 [2021-11-21 00:41:25,955 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:41:25,955 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:41:26,924 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:41:26,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 76 [2021-11-21 00:41:28,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:28,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:28,940 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:41:28,957 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 6 treesize of output 5 [2021-11-21 00:41:29,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:29,322 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:41:29,323 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 238 treesize of output 245 [2021-11-21 00:41:29,438 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:41:29,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 245 treesize of output 284 [2021-11-21 00:41:34,645 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:41:34,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 406 treesize of output 282 [2021-11-21 00:41:36,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:36,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:37,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:41:37,328 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 6 treesize of output 5 [2021-11-21 00:41:37,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:37,787 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:41:37,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 238 treesize of output 277 [2021-11-21 00:41:37,831 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:41:37,831 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 277 treesize of output 284 [2021-11-21 00:41:44,141 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:41:44,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 368 treesize of output 244 [2021-11-21 00:41:45,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:46,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:47,745 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:41:47,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:41:48,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:48,838 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:41:48,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 131 treesize of output 149 [2021-11-21 00:41:49,764 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:41:49,765 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:41:50,698 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:41:50,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 79 [2021-11-21 00:41:51,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:52,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:41:52,810 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 6 treesize of output 5 [2021-11-21 00:41:52,828 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:41:53,003 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 16 treesize of output 12 [2021-11-21 00:41:53,232 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:41:53,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 238 treesize of output 245 [2021-11-21 00:41:53,364 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:41:53,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 245 treesize of output 284 [2021-11-21 00:41:58,536 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:41:58,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 325 treesize of output 246 [2021-11-21 00:42:00,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:00,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:01,016 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:42:01,034 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 6 treesize of output 5 [2021-11-21 00:42:01,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:01,307 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 8 treesize of output 7 [2021-11-21 00:42:01,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:42:01,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:01,654 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:42:01,654 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 25 treesize of output 25 [2021-11-21 00:42:02,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:42:02,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:42:02,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:42:02,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:02,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:02,040 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:42:02,040 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:42:02,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:03,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:03,992 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:42:05,065 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:42:06,199 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:42:06,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:42:06,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-11-21 00:42:06,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256956820] [2021-11-21 00:42:06,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:42:06,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:42:06,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:42:06,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:42:06,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:42:06,201 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-11-21 00:42:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:42:06,429 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-11-21 00:42:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 00:42:06,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-21 00:42:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:42:06,430 INFO L225 Difference]: With dead ends: 92 [2021-11-21 00:42:06,430 INFO L226 Difference]: Without dead ends: 92 [2021-11-21 00:42:06,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2021-11-21 00:42:06,431 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:42:06,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 33 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:42:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-21 00:42:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2021-11-21 00:42:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 85 states have internal predecessors, (96), 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) [2021-11-21 00:42:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-11-21 00:42:06,434 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 42 [2021-11-21 00:42:06,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:42:06,434 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-11-21 00:42:06,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-11-21 00:42:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-11-21 00:42:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-21 00:42:06,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:06,435 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 3, 1, 1] [2021-11-21 00:42:06,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-21 00:42:06,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-21 00:42:06,636 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-21 00:42:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:06,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1787404765, now seen corresponding path program 4 times [2021-11-21 00:42:06,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:06,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067539106] [2021-11-21 00:42:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:06,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 40 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 00:42:06,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:06,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067539106] [2021-11-21 00:42:06,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067539106] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:42:06,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569107610] [2021-11-21 00:42:06,794 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:42:06,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:42:06,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:42:06,795 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:42:06,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_654d1463-b2a7-4a50-a278-0864030c9ecc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-21 00:42:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:06,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 00:42:06,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:42:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 40 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 00:42:07,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:42:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 40 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 00:42:07,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569107610] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:42:07,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1737702687] [2021-11-21 00:42:07,172 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:42:07,172 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:42:07,172 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:42:07,173 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:42:07,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:42:07,187 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 6 treesize of output 5 [2021-11-21 00:42:07,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:42:07,249 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 14 treesize of output 16 [2021-11-21 00:42:07,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:08,053 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:42:08,053 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 203 treesize of output 210 [2021-11-21 00:42:10,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:10,831 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-21 00:42:10,831 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 220 [2021-11-21 00:42:11,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:11,303 INFO L354 Elim1Store]: treesize reduction 97, result has 14.2 percent of original size [2021-11-21 00:42:11,304 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 221 [2021-11-21 00:42:11,955 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 6 treesize of output 5 [2021-11-21 00:42:11,970 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:42:12,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:12,187 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 8 treesize of output 7 [2021-11-21 00:42:12,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:42:12,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:12,469 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:42:12,469 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 15 treesize of output 15 [2021-11-21 00:42:12,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:12,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:12,965 INFO L354 Elim1Store]: treesize reduction 95, result has 34.9 percent of original size [2021-11-21 00:42:12,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 199 [2021-11-21 00:42:13,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:14,248 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 16 treesize of output 12 [2021-11-21 00:42:15,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 00:42:15,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:15,749 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 8 treesize of output 7 [2021-11-21 00:42:15,766 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 12 treesize of output 9 [2021-11-21 00:42:16,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:16,176 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:42:16,176 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 25 treesize of output 25 [2021-11-21 00:42:16,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:42:16,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:42:16,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:42:16,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:16,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:16,478 INFO L354 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2021-11-21 00:42:16,479 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 185 [2021-11-21 00:42:17,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:17,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:19,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 34 treesize of output 31 [2021-11-21 00:42:19,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:42:19,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-21 00:42:19,667 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:42:19,667 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 90 treesize of output 99 [2021-11-21 00:42:19,704 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:42:19,705 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 93 treesize of output 102 [2021-11-21 00:42:20,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:20,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:20,989 INFO L354 Elim1Store]: treesize reduction 51, result has 17.7 percent of original size [2021-11-21 00:42:20,990 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 98 [2021-11-21 00:42:22,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:22,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:23,024 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 6 treesize of output 5 [2021-11-21 00:42:23,035 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:42:23,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:23,315 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 8 treesize of output 7 [2021-11-21 00:42:23,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:42:24,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:24,058 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:42:24,059 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 15 treesize of output 15 [2021-11-21 00:42:24,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:25,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:26,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:26,604 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 6 treesize of output 5 [2021-11-21 00:42:26,617 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:42:26,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:26,997 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 8 treesize of output 7 [2021-11-21 00:42:27,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:42:27,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:42:27,601 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-21 00:42:27,602 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 25 treesize of output 25 [2021-11-21 00:42:28,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:29,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:30,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:31,486 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:42:31,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:42:31,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:32,469 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:42:32,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:42:33,815 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:42:33,817 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:42:34,767 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:42:34,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 77 [2021-11-21 00:42:35,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:36,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:36,727 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:42:36,744 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 6 treesize of output 5 [2021-11-21 00:42:36,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:37,246 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:42:37,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 216 treesize of output 223 [2021-11-21 00:42:37,379 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:42:37,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 223 treesize of output 266 [2021-11-21 00:42:43,749 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:42:43,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 270 [2021-11-21 00:42:45,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:45,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:46,278 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:42:46,290 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 6 treesize of output 5 [2021-11-21 00:42:46,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:46,560 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:42:46,560 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 216 treesize of output 223 [2021-11-21 00:42:46,674 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:42:46,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 223 treesize of output 266 [2021-11-21 00:42:53,350 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:42:53,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 299 treesize of output 220 [2021-11-21 00:42:54,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:55,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:56,559 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:42:56,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 43 [2021-11-21 00:42:57,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:42:57,660 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-21 00:42:57,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 131 treesize of output 149 [2021-11-21 00:42:58,934 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-11-21 00:42:58,934 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 2 case distinctions, treesize of input 27 treesize of output 36 [2021-11-21 00:42:59,857 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:42:59,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 79 [2021-11-21 00:43:00,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:43:01,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:43:01,804 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:43:01,821 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 6 treesize of output 5 [2021-11-21 00:43:01,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:43:02,264 INFO L354 Elim1Store]: treesize reduction 96, result has 38.9 percent of original size [2021-11-21 00:43:02,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 238 treesize of output 277 [2021-11-21 00:43:02,307 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-11-21 00:43:02,307 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 277 treesize of output 284 [2021-11-21 00:43:14,002 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-21 00:43:14,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 179 [2021-11-21 00:43:15,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:43:15,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:43:16,289 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 6 treesize of output 5