./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i --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_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/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_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/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_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/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 3747e65f01c1fbd6eb9d2ad39b0ceed8be631bde45acb074c0903963e660faab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:49:06,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:49:06,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:49:06,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:49:06,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:49:06,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:49:06,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:49:06,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:49:06,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:49:06,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:49:06,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:49:06,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:49:06,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:49:06,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:49:06,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:49:06,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:49:06,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:49:06,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:49:06,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:49:06,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:49:06,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:49:06,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:49:06,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:49:06,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:49:06,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:49:06,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:49:06,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:49:06,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:49:06,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:49:06,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:49:06,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:49:06,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:49:06,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:49:06,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:49:06,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:49:06,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:49:06,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:49:06,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:49:06,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:49:06,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:49:06,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:49:06,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:49:06,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:49:06,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:49:06,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:49:06,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:49:06,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:49:06,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:49:06,467 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:49:06,467 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:49:06,467 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:49:06,468 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:49:06,469 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:49:06,469 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:49:06,470 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:49:06,470 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:49:06,470 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:49:06,471 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:49:06,471 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:49:06,471 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:49:06,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:49:06,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:49:06,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:49:06,473 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:49:06,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:49:06,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:49:06,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:49:06,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:49:06,477 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:49:06,477 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:49:06,477 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:49:06,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:49:06,478 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:49:06,479 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:49:06,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:49:06,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:49:06,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:49:06,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:06,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:49:06,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:49:06,481 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:49:06,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:49:06,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:49:06,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:49:06,482 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_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3747e65f01c1fbd6eb9d2ad39b0ceed8be631bde45acb074c0903963e660faab [2021-11-21 01:49:06,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:49:06,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:49:06,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:49:06,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:49:06,832 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:49:06,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2021-11-21 01:49:06,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/data/80edf779a/c76424d6d06845bf9d257c4a3a86ee44/FLAG4baa36e1e [2021-11-21 01:49:07,550 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:49:07,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2021-11-21 01:49:07,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/data/80edf779a/c76424d6d06845bf9d257c4a3a86ee44/FLAG4baa36e1e [2021-11-21 01:49:07,819 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/data/80edf779a/c76424d6d06845bf9d257c4a3a86ee44 [2021-11-21 01:49:07,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:49:07,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:49:07,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:07,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:49:07,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:49:07,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:07" (1/1) ... [2021-11-21 01:49:07,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239c0173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:07, skipping insertion in model container [2021-11-21 01:49:07,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:07" (1/1) ... [2021-11-21 01:49:07,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:49:07,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:49:08,407 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/sv-benchmarks/c/list-ext-properties/list-ext_flag.i[23527,23540] [2021-11-21 01:49:08,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:08,432 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:49:08,498 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/sv-benchmarks/c/list-ext-properties/list-ext_flag.i[23527,23540] [2021-11-21 01:49:08,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:08,534 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:49:08,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08 WrapperNode [2021-11-21 01:49:08,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:08,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:08,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:49:08,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:49:08,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,592 INFO L137 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 123 [2021-11-21 01:49:08,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:08,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:49:08,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:49:08,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:49:08,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:49:08,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:49:08,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:49:08,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:49:08,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (1/1) ... [2021-11-21 01:49:08,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:08,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:08,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:49:08,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:49:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-21 01:49:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-21 01:49:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:49:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:49:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:49:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:49:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:49:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:49:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:49:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:49:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:49:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:49:08,878 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:49:08,880 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:49:08,928 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-21 01:49:09,314 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:49:09,358 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:49:09,358 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:49:09,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:09 BoogieIcfgContainer [2021-11-21 01:49:09,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:49:09,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:49:09,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:49:09,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:49:09,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:07" (1/3) ... [2021-11-21 01:49:09,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a330127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:09, skipping insertion in model container [2021-11-21 01:49:09,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:08" (2/3) ... [2021-11-21 01:49:09,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a330127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:09, skipping insertion in model container [2021-11-21 01:49:09,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:09" (3/3) ... [2021-11-21 01:49:09,405 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_flag.i [2021-11-21 01:49:09,413 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:49:09,414 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2021-11-21 01:49:09,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:49:09,489 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 01:49:09,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2021-11-21 01:49:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 93 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:49:09,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:09,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:49:09,520 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:09,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash 221449, now seen corresponding path program 1 times [2021-11-21 01:49:09,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:09,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505945143] [2021-11-21 01:49:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:09,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:09,724 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 01:49:09,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:09,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505945143] [2021-11-21 01:49:09,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505945143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:09,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:09,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:49:09,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356499110] [2021-11-21 01:49:09,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:09,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:49:09,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:09,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:49:09,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:49:09,772 INFO L87 Difference]: Start difference. First operand has 95 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 93 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:49:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:09,924 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2021-11-21 01:49:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:49:09,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-21 01:49:09,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:09,938 INFO L225 Difference]: With dead ends: 113 [2021-11-21 01:49:09,938 INFO L226 Difference]: Without dead ends: 107 [2021-11-21 01:49:09,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:49:09,948 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 90 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:09,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 72 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-21 01:49:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2021-11-21 01:49:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 44 states have (on average 2.159090909090909) internal successors, (95), 87 states have internal predecessors, (95), 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 01:49:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2021-11-21 01:49:10,014 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 3 [2021-11-21 01:49:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:10,015 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2021-11-21 01:49:10,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:49:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2021-11-21 01:49:10,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:49:10,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:10,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:49:10,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:49:10,017 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash 221450, now seen corresponding path program 1 times [2021-11-21 01:49:10,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:10,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437533393] [2021-11-21 01:49:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:10,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:10,094 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 01:49:10,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:10,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437533393] [2021-11-21 01:49:10,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437533393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:10,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:10,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:49:10,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695362311] [2021-11-21 01:49:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:10,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:49:10,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:10,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:49:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:49:10,099 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:49:10,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:10,225 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2021-11-21 01:49:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:49:10,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-21 01:49:10,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:10,228 INFO L225 Difference]: With dead ends: 87 [2021-11-21 01:49:10,228 INFO L226 Difference]: Without dead ends: 87 [2021-11-21 01:49:10,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:49:10,230 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:10,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 56 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-21 01:49:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-21 01:49:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 86 states have internal predecessors, (94), 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 01:49:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2021-11-21 01:49:10,253 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 3 [2021-11-21 01:49:10,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:10,253 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2021-11-21 01:49:10,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:49:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2021-11-21 01:49:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:49:10,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:10,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:49:10,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:49:10,255 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:10,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1987129323, now seen corresponding path program 1 times [2021-11-21 01:49:10,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:10,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527692574] [2021-11-21 01:49:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:10,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:10,305 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 01:49:10,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:10,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527692574] [2021-11-21 01:49:10,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527692574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:10,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:10,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:49:10,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403473310] [2021-11-21 01:49:10,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:10,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:49:10,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:49:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:49:10,309 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:10,436 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2021-11-21 01:49:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:49:10,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:49:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:10,438 INFO L225 Difference]: With dead ends: 81 [2021-11-21 01:49:10,438 INFO L226 Difference]: Without dead ends: 81 [2021-11-21 01:49:10,439 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 01:49:10,440 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 55 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:10,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 43 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:10,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-21 01:49:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2021-11-21 01:49:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.816326530612245) internal successors, (89), 77 states have internal predecessors, (89), 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 01:49:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2021-11-21 01:49:10,451 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 6 [2021-11-21 01:49:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:10,452 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2021-11-21 01:49:10,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2021-11-21 01:49:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:49:10,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:10,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:49:10,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:49:10,453 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:10,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1987129322, now seen corresponding path program 1 times [2021-11-21 01:49:10,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:10,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399933955] [2021-11-21 01:49:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:10,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:10,530 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 01:49:10,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:10,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399933955] [2021-11-21 01:49:10,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399933955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:10,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:10,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:49:10,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422285265] [2021-11-21 01:49:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:10,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:49:10,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:10,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:49:10,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:49:10,533 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:10,747 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-11-21 01:49:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:49:10,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:49:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:10,749 INFO L225 Difference]: With dead ends: 111 [2021-11-21 01:49:10,750 INFO L226 Difference]: Without dead ends: 111 [2021-11-21 01:49:10,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 01:49:10,752 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 158 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:10,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 47 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:49:10,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-21 01:49:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2021-11-21 01:49:10,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 71 states have (on average 1.591549295774648) internal successors, (113), 97 states have internal predecessors, (113), 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 01:49:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2021-11-21 01:49:10,764 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 6 [2021-11-21 01:49:10,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:10,764 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2021-11-21 01:49:10,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2021-11-21 01:49:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:49:10,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:10,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:10,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:49:10,766 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:10,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1471462851, now seen corresponding path program 1 times [2021-11-21 01:49:10,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:10,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138440404] [2021-11-21 01:49:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:10,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:10,862 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 01:49:10,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:10,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138440404] [2021-11-21 01:49:10,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138440404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:10,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:10,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:49:10,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92341840] [2021-11-21 01:49:10,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:10,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:49:10,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:49:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:49:10,869 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 01:49:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:11,013 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2021-11-21 01:49:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:49:11,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-21 01:49:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:11,015 INFO L225 Difference]: With dead ends: 114 [2021-11-21 01:49:11,016 INFO L226 Difference]: Without dead ends: 114 [2021-11-21 01:49:11,017 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 01:49:11,021 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 134 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:11,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 65 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-21 01:49:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2021-11-21 01:49:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.5733333333333333) internal successors, (118), 101 states have internal predecessors, (118), 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 01:49:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-11-21 01:49:11,044 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 7 [2021-11-21 01:49:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:11,044 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-11-21 01:49:11,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 01:49:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-11-21 01:49:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:49:11,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:11,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:11,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:49:11,047 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash 810564120, now seen corresponding path program 1 times [2021-11-21 01:49:11,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:11,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118397999] [2021-11-21 01:49:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:11,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:11,172 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 01:49:11,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:11,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118397999] [2021-11-21 01:49:11,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118397999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:11,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:11,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:49:11,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154942559] [2021-11-21 01:49:11,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:11,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:49:11,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:49:11,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:11,175 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 01:49:11,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:11,353 INFO L93 Difference]: Finished difference Result 135 states and 155 transitions. [2021-11-21 01:49:11,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:49:11,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 01:49:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:11,356 INFO L225 Difference]: With dead ends: 135 [2021-11-21 01:49:11,356 INFO L226 Difference]: Without dead ends: 135 [2021-11-21 01:49:11,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:49:11,362 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 66 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:11,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 140 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-21 01:49:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2021-11-21 01:49:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 78 states have (on average 1.564102564102564) internal successors, (122), 104 states have internal predecessors, (122), 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 01:49:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2021-11-21 01:49:11,386 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 11 [2021-11-21 01:49:11,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:11,386 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2021-11-21 01:49:11,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 01:49:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2021-11-21 01:49:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:49:11,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:11,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:11,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:49:11,388 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1590017575, now seen corresponding path program 1 times [2021-11-21 01:49:11,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:11,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133457857] [2021-11-21 01:49:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:11,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:11,511 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 01:49:11,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:11,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133457857] [2021-11-21 01:49:11,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133457857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:11,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:11,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:49:11,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768981720] [2021-11-21 01:49:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:11,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:49:11,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:11,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:49:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:11,518 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:49:11,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:11,728 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2021-11-21 01:49:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:49:11,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-11-21 01:49:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:11,729 INFO L225 Difference]: With dead ends: 138 [2021-11-21 01:49:11,729 INFO L226 Difference]: Without dead ends: 138 [2021-11-21 01:49:11,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:49:11,731 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 91 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:11,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 134 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:49:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-21 01:49:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2021-11-21 01:49:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 104 states have internal predecessors, (121), 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 01:49:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2021-11-21 01:49:11,737 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 13 [2021-11-21 01:49:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:11,738 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2021-11-21 01:49:11,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:49:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2021-11-21 01:49:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:49:11,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:11,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:11,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:49:11,740 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:11,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1142184757, now seen corresponding path program 1 times [2021-11-21 01:49:11,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:11,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649041875] [2021-11-21 01:49:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:11,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:11,788 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 01:49:11,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:11,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649041875] [2021-11-21 01:49:11,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649041875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:11,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:11,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:49:11,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20864305] [2021-11-21 01:49:11,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:11,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:49:11,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:11,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:49:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:49:11,791 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:11,905 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2021-11-21 01:49:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:49:11,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 01:49:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:11,909 INFO L225 Difference]: With dead ends: 112 [2021-11-21 01:49:11,909 INFO L226 Difference]: Without dead ends: 112 [2021-11-21 01:49:11,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 01:49:11,912 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 139 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:11,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 69 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-21 01:49:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2021-11-21 01:49:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.525) internal successors, (122), 105 states have internal predecessors, (122), 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 01:49:11,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-11-21 01:49:11,922 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 15 [2021-11-21 01:49:11,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:11,922 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-11-21 01:49:11,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-11-21 01:49:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:49:11,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:11,925 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:11,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:49:11,925 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:11,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1552351691, now seen corresponding path program 1 times [2021-11-21 01:49:11,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:11,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113111809] [2021-11-21 01:49:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:11,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:12,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:12,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113111809] [2021-11-21 01:49:12,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113111809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:12,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:12,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:49:12,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276852906] [2021-11-21 01:49:12,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:12,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:49:12,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:49:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:12,043 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 01:49:12,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:12,202 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2021-11-21 01:49:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:49:12,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 16 [2021-11-21 01:49:12,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:12,203 INFO L225 Difference]: With dead ends: 116 [2021-11-21 01:49:12,203 INFO L226 Difference]: Without dead ends: 116 [2021-11-21 01:49:12,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:49:12,205 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 105 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:12,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 96 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:12,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-21 01:49:12,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2021-11-21 01:49:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.5) internal successors, (120), 103 states have internal predecessors, (120), 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 01:49:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-11-21 01:49:12,209 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 16 [2021-11-21 01:49:12,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:12,209 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-11-21 01:49:12,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 01:49:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-11-21 01:49:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:49:12,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:12,211 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:12,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:49:12,211 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:12,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1552351692, now seen corresponding path program 1 times [2021-11-21 01:49:12,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:12,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832151791] [2021-11-21 01:49:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:12,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:12,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:12,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832151791] [2021-11-21 01:49:12,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832151791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:12,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:12,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:49:12,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588154933] [2021-11-21 01:49:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:12,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:49:12,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:12,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:49:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:12,276 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 01:49:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:12,461 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2021-11-21 01:49:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:49:12,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 16 [2021-11-21 01:49:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:12,462 INFO L225 Difference]: With dead ends: 112 [2021-11-21 01:49:12,463 INFO L226 Difference]: Without dead ends: 112 [2021-11-21 01:49:12,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:49:12,464 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 59 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:12,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 155 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:12,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-21 01:49:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 88. [2021-11-21 01:49:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 87 states have internal predecessors, (103), 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 01:49:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2021-11-21 01:49:12,468 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 16 [2021-11-21 01:49:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:12,468 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2021-11-21 01:49:12,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 01:49:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2021-11-21 01:49:12,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:49:12,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:12,469 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:12,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:49:12,470 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash 878266183, now seen corresponding path program 1 times [2021-11-21 01:49:12,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:12,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391620572] [2021-11-21 01:49:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:12,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:12,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:12,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391620572] [2021-11-21 01:49:12,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391620572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:12,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623757110] [2021-11-21 01:49:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:12,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:12,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:12,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:12,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:49:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:12,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:49:12,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:12,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:12,803 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:49:12,804 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 12 treesize of output 11 [2021-11-21 01:49:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:12,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623757110] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:12,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1114261273] [2021-11-21 01:49:12,908 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-21 01:49:12,909 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:12,913 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:12,920 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:12,920 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:13,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:13,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:13,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:49:13,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:13,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:13,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:13,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:49:13,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:13,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:49:13,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:13,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:49:13,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:13,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:49:14,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-11-21 01:49:14,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:49:14,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:49:14,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:49:14,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:49:14,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:49:14,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:49:14,651 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 23 treesize of output 13 [2021-11-21 01:49:14,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:14,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-21 01:49:15,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:15,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:49:15,333 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 19 treesize of output 1 [2021-11-21 01:49:15,421 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 15 treesize of output 1 [2021-11-21 01:49:15,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:15,431 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 21 treesize of output 20 [2021-11-21 01:49:15,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:15,503 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:15,503 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 17 treesize of output 21 [2021-11-21 01:49:15,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 01:49:15,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:15,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:15,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:15,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:15,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:15,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:16,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:16,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:49:16,309 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 19 treesize of output 1 [2021-11-21 01:49:16,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:16,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:16,449 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 21 treesize of output 20 [2021-11-21 01:49:16,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:16,539 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:49:16,539 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:49:16,593 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:16,594 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 17 treesize of output 21 [2021-11-21 01:49:16,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:16,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:16,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:16,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:16,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:16,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:17,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2021-11-21 01:49:17,343 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 42 treesize of output 27 [2021-11-21 01:49:17,348 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 27 treesize of output 23 [2021-11-21 01:49:17,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:49:17,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:17,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:17,643 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 15 treesize of output 1 [2021-11-21 01:49:17,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:17,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:49:17,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:17,724 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:17,724 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 17 treesize of output 21 [2021-11-21 01:49:17,777 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 01:49:17,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:17,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:17,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:17,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:17,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:17,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:18,152 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:18,822 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:18,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:18,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2021-11-21 01:49:18,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313191775] [2021-11-21 01:49:18,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:18,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:49:18,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:49:18,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:49:18,825 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 01:49:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:18,942 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2021-11-21 01:49:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:49:18,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 01:49:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:18,943 INFO L225 Difference]: With dead ends: 103 [2021-11-21 01:49:18,944 INFO L226 Difference]: Without dead ends: 103 [2021-11-21 01:49:18,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:49:18,945 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 145 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:18,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 68 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:18,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-21 01:49:18,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 84. [2021-11-21 01:49:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 83 states have internal predecessors, (97), 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 01:49:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2021-11-21 01:49:18,948 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 17 [2021-11-21 01:49:18,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:18,948 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2021-11-21 01:49:18,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 01:49:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2021-11-21 01:49:18,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:49:18,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:18,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:18,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:19,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 01:49:19,162 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2095001974, now seen corresponding path program 1 times [2021-11-21 01:49:19,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:19,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759583313] [2021-11-21 01:49:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:19,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:19,230 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 01:49:19,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:19,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759583313] [2021-11-21 01:49:19,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759583313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:19,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:19,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:49:19,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273210292] [2021-11-21 01:49:19,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:19,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:49:19,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:19,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:49:19,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:19,233 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 01:49:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:19,383 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2021-11-21 01:49:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:49:19,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 01:49:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:19,385 INFO L225 Difference]: With dead ends: 125 [2021-11-21 01:49:19,385 INFO L226 Difference]: Without dead ends: 115 [2021-11-21 01:49:19,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:49:19,386 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 74 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:19,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-21 01:49:19,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2021-11-21 01:49:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 88 states have internal predecessors, (102), 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 01:49:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2021-11-21 01:49:19,391 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 18 [2021-11-21 01:49:19,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:19,391 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2021-11-21 01:49:19,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 01:49:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2021-11-21 01:49:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:49:19,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:19,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:19,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:49:19,394 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:19,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash -518232100, now seen corresponding path program 1 times [2021-11-21 01:49:19,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:19,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784039609] [2021-11-21 01:49:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:19,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:19,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:19,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784039609] [2021-11-21 01:49:19,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784039609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:19,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:19,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:49:19,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830344274] [2021-11-21 01:49:19,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:19,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:49:19,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:49:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:49:19,540 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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 01:49:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:19,748 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2021-11-21 01:49:19,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:49:19,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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 20 [2021-11-21 01:49:19,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:19,750 INFO L225 Difference]: With dead ends: 97 [2021-11-21 01:49:19,750 INFO L226 Difference]: Without dead ends: 87 [2021-11-21 01:49:19,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:49:19,751 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 107 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:19,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 190 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:49:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-21 01:49:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2021-11-21 01:49:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 78 states have internal predecessors, (91), 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 01:49:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2021-11-21 01:49:19,756 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 20 [2021-11-21 01:49:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:19,756 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2021-11-21 01:49:19,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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 01:49:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2021-11-21 01:49:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:49:19,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:19,758 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:19,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:49:19,758 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:19,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:19,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1281403426, now seen corresponding path program 1 times [2021-11-21 01:49:19,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:19,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198588110] [2021-11-21 01:49:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:19,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:19,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:19,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198588110] [2021-11-21 01:49:19,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198588110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:19,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773257179] [2021-11-21 01:49:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:19,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:19,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:19,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:19,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:49:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:19,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:49:19,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:20,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-11-21 01:49:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:20,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:20,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773257179] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:20,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386625155] [2021-11-21 01:49:20,148 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 01:49:20,149 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:20,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:20,149 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:20,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:20,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:20,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:20,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:49:20,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:20,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:20,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:49:20,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:20,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:20,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:49:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:20,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:49:20,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:20,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:49:21,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:49:21,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:49:21,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-11-21 01:49:21,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:49:21,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:49:21,464 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 23 treesize of output 13 [2021-11-21 01:49:21,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:49:21,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:49:21,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:21,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-21 01:49:22,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:49:22,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:22,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:22,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:22,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:22,179 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 21 treesize of output 20 [2021-11-21 01:49:22,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:22,250 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:22,251 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 17 treesize of output 21 [2021-11-21 01:49:22,281 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 01:49:22,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:22,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:22,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:22,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:22,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:22,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:22,810 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 22 treesize of output 18 [2021-11-21 01:49:22,826 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 19 treesize of output 1 [2021-11-21 01:49:22,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:22,946 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 15 treesize of output 1 [2021-11-21 01:49:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:22,958 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 21 treesize of output 20 [2021-11-21 01:49:22,976 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 15 treesize of output 1 [2021-11-21 01:49:23,038 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:49:23,039 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:49:23,115 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:23,115 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 17 treesize of output 21 [2021-11-21 01:49:23,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:23,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:23,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:23,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:23,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:23,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:23,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:49:23,850 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 19 treesize of output 1 [2021-11-21 01:49:23,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:24,006 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 15 treesize of output 1 [2021-11-21 01:49:24,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:24,017 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 21 treesize of output 20 [2021-11-21 01:49:24,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:24,093 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:49:24,093 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:49:24,160 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:24,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:49:24,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:24,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:24,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:24,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:24,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:24,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:24,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2021-11-21 01:49:24,599 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 42 treesize of output 38 [2021-11-21 01:49:24,603 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 38 treesize of output 23 [2021-11-21 01:49:25,049 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:26,022 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:26,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:26,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-21 01:49:26,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280533321] [2021-11-21 01:49:26,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:26,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:49:26,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:49:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2021-11-21 01:49:26,024 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 01:49:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:26,391 INFO L93 Difference]: Finished difference Result 252 states and 291 transitions. [2021-11-21 01:49:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:49:26,392 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 21 [2021-11-21 01:49:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:26,394 INFO L225 Difference]: With dead ends: 252 [2021-11-21 01:49:26,394 INFO L226 Difference]: Without dead ends: 252 [2021-11-21 01:49:26,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 01:49:26,396 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 199 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:26,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 347 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:49:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-21 01:49:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 149. [2021-11-21 01:49:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 133 states have (on average 1.4285714285714286) internal successors, (190), 148 states have internal predecessors, (190), 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 01:49:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 190 transitions. [2021-11-21 01:49:26,406 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 190 transitions. Word has length 21 [2021-11-21 01:49:26,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:26,407 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 190 transitions. [2021-11-21 01:49:26,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 01:49:26,407 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 190 transitions. [2021-11-21 01:49:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 01:49:26,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:26,412 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:26,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:26,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 01:49:26,638 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:26,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:26,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1199942735, now seen corresponding path program 1 times [2021-11-21 01:49:26,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:26,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59557251] [2021-11-21 01:49:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:26,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:26,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:26,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59557251] [2021-11-21 01:49:26,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59557251] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:26,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775698577] [2021-11-21 01:49:26,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:26,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:26,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:26,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:26,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:49:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:26,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-21 01:49:26,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:26,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:49:27,042 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:49:27,045 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 01:49:27,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:27,108 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 27 treesize of output 11 [2021-11-21 01:49:27,113 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 18 treesize of output 14 [2021-11-21 01:49:27,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 8 [2021-11-21 01:49:27,199 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:49:27,200 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 23 treesize of output 22 [2021-11-21 01:49:27,310 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:49:27,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 14 [2021-11-21 01:49:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:27,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:31,248 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_93| Int) (v_DerPreprocessor_1 Int)) (= 2 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_DerPreprocessor_1)))) (store .cse0 |c_ULTIMATE.start_main_~t~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~t~0#1.base|) |v_ULTIMATE.start_main_~p~0#1.offset_93| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-11-21 01:49:31,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 896 treesize of output 864 [2021-11-21 01:49:32,693 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:49:32,694 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 24 treesize of output 23 [2021-11-21 01:49:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:33,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775698577] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:33,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1191970155] [2021-11-21 01:49:33,256 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-21 01:49:33,256 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:33,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:33,256 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:33,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:33,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:33,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:33,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:49:33,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:33,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:49:33,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:33,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:33,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:49:33,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:33,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:49:33,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:33,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:49:34,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:49:34,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:49:34,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-11-21 01:49:34,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:49:34,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:34,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-21 01:49:34,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:49:34,704 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 23 treesize of output 13 [2021-11-21 01:49:34,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:49:34,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:49:35,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:35,059 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 19 treesize of output 1 [2021-11-21 01:49:35,083 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 22 treesize of output 18 [2021-11-21 01:49:35,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:35,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:35,184 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 21 treesize of output 20 [2021-11-21 01:49:35,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:35,253 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:35,253 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 17 treesize of output 21 [2021-11-21 01:49:35,275 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 01:49:35,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:35,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:35,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:35,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:35,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:35,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:35,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:49:35,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:35,926 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 19 treesize of output 1 [2021-11-21 01:49:36,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:36,054 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 15 treesize of output 1 [2021-11-21 01:49:36,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:36,066 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 21 treesize of output 20 [2021-11-21 01:49:36,132 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:36,133 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 17 treesize of output 21 [2021-11-21 01:49:36,151 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 01:49:36,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:36,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:36,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:36,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:36,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:36,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:36,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:36,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:36,794 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 22 treesize of output 18 [2021-11-21 01:49:36,909 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 15 treesize of output 1 [2021-11-21 01:49:36,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:36,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:36,933 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 21 treesize of output 20 [2021-11-21 01:49:36,985 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:49:36,986 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:49:37,037 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:37,037 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 17 treesize of output 21 [2021-11-21 01:49:37,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:37,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:37,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:37,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2021-11-21 01:49:37,334 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 42 treesize of output 38 [2021-11-21 01:49:37,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 23 [2021-11-21 01:49:37,847 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:39,300 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:39,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:39,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2021-11-21 01:49:39,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551824919] [2021-11-21 01:49:39,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:39,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-21 01:49:39,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:39,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-21 01:49:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1325, Unknown=9, NotChecked=76, Total=1640 [2021-11-21 01:49:39,303 INFO L87 Difference]: Start difference. First operand 149 states and 190 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 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 01:49:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:40,334 INFO L93 Difference]: Finished difference Result 192 states and 236 transitions. [2021-11-21 01:49:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:49:40,335 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 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 23 [2021-11-21 01:49:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:40,337 INFO L225 Difference]: With dead ends: 192 [2021-11-21 01:49:40,337 INFO L226 Difference]: Without dead ends: 192 [2021-11-21 01:49:40,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=297, Invalid=1767, Unknown=10, NotChecked=88, Total=2162 [2021-11-21 01:49:40,339 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 144 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:40,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 340 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 314 Invalid, 0 Unknown, 315 Unchecked, 0.3s Time] [2021-11-21 01:49:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-21 01:49:40,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 162. [2021-11-21 01:49:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 146 states have (on average 1.4109589041095891) internal successors, (206), 161 states have internal predecessors, (206), 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 01:49:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 206 transitions. [2021-11-21 01:49:40,356 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 206 transitions. Word has length 23 [2021-11-21 01:49:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:40,357 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 206 transitions. [2021-11-21 01:49:40,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 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 01:49:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 206 transitions. [2021-11-21 01:49:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 01:49:40,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:40,360 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:40,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:40,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:40,586 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:49:40,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1200250565, now seen corresponding path program 1 times [2021-11-21 01:49:40,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:40,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148778633] [2021-11-21 01:49:40,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:40,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:40,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148778633] [2021-11-21 01:49:40,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148778633] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780833727] [2021-11-21 01:49:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:40,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:40,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:40,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:40,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:49:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:40,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-21 01:49:40,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:40,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:41,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:41,088 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 21 treesize of output 20 [2021-11-21 01:49:41,149 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:49:41,149 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 01:49:41,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:41,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:41,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:41,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:41,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-21 01:49:41,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 8 [2021-11-21 01:49:41,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:41,402 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-11-21 01:49:41,402 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 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-21 01:49:41,525 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-21 01:49:41,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 23 [2021-11-21 01:49:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:41,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:44,099 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_104| Int) (v_DerPreprocessor_2 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_DerPreprocessor_2)))) (store .cse0 |c_ULTIMATE.start_main_~t~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~t~0#1.base|) |v_ULTIMATE.start_main_~p~0#1.offset_104| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0)) is different from false [2021-11-21 01:49:49,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 235 treesize of output 229 [2021-11-21 01:49:49,967 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:49:49,968 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 138 treesize of output 137 [2021-11-21 01:49:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:50,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780833727] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:50,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1875878526] [2021-11-21 01:49:50,662 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-21 01:49:50,662 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:50,662 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:50,663 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:50,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:50,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:50,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:50,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:49:50,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:50,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:49:50,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:50,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:51,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:49:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:49:51,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:49:51,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:49:51,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:49:51,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-11-21 01:49:51,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:49:51,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:49:51,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:49:51,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:51,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-21 01:49:51,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:49:51,908 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 23 treesize of output 13 [2021-11-21 01:49:52,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:49:52,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:52,221 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 19 treesize of output 1 [2021-11-21 01:49:52,309 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 15 treesize of output 1 [2021-11-21 01:49:52,330 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 15 treesize of output 1 [2021-11-21 01:49:52,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:52,349 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 21 treesize of output 20 [2021-11-21 01:49:52,436 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:52,436 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 17 treesize of output 21 [2021-11-21 01:49:52,470 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 01:49:52,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:52,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:52,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:52,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:52,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:52,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:53,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:53,059 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 19 treesize of output 1 [2021-11-21 01:49:53,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:49:53,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:53,189 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 21 treesize of output 20 [2021-11-21 01:49:53,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:53,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:53,291 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:53,292 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 17 treesize of output 21 [2021-11-21 01:49:53,319 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 01:49:53,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:53,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:53,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:53,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:53,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:53,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:53,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:53,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:49:53,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:49:53,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:53,977 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 21 treesize of output 20 [2021-11-21 01:49:53,989 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 15 treesize of output 1 [2021-11-21 01:49:53,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:49:54,035 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:49:54,035 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 17 treesize of output 21 [2021-11-21 01:49:54,065 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 01:49:54,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:54,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:54,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:49:54,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:49:54,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2021-11-21 01:49:54,449 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 53 treesize of output 38 [2021-11-21 01:49:54,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 23 [2021-11-21 01:49:55,050 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:56,611 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:56,611 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:56,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2021-11-21 01:49:56,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323459997] [2021-11-21 01:49:56,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:56,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-21 01:49:56,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:56,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-21 01:49:56,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1747, Unknown=8, NotChecked=88, Total=2162 [2021-11-21 01:49:56,614 INFO L87 Difference]: Start difference. First operand 162 states and 206 transitions. Second operand has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 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 01:50:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:00,408 INFO L93 Difference]: Finished difference Result 175 states and 218 transitions. [2021-11-21 01:50:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-21 01:50:00,409 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 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 23 [2021-11-21 01:50:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:00,411 INFO L225 Difference]: With dead ends: 175 [2021-11-21 01:50:00,411 INFO L226 Difference]: Without dead ends: 175 [2021-11-21 01:50:00,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=373, Invalid=1973, Unknown=10, NotChecked=94, Total=2450 [2021-11-21 01:50:00,413 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 62 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 334 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:00,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 398 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 403 Invalid, 0 Unknown, 334 Unchecked, 0.3s Time] [2021-11-21 01:50:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-21 01:50:00,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 162. [2021-11-21 01:50:00,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 146 states have (on average 1.404109589041096) internal successors, (205), 161 states have internal predecessors, (205), 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 01:50:00,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 205 transitions. [2021-11-21 01:50:00,420 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 205 transitions. Word has length 23 [2021-11-21 01:50:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:00,421 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 205 transitions. [2021-11-21 01:50:00,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 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 01:50:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 205 transitions. [2021-11-21 01:50:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 01:50:00,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:00,422 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:00,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:00,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 01:50:00,638 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:50:00,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1890063599, now seen corresponding path program 1 times [2021-11-21 01:50:00,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:00,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424801373] [2021-11-21 01:50:00,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:00,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:00,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:00,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424801373] [2021-11-21 01:50:00,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424801373] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:50:00,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419347414] [2021-11-21 01:50:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:00,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:00,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:00,821 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:50:00,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:50:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:00,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-21 01:50:00,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:00,916 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 13 treesize of output 9 [2021-11-21 01:50:01,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:01,025 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 22 treesize of output 21 [2021-11-21 01:50:01,078 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:50:01,078 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 01:50:01,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:01,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:01,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:01,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-11-21 01:50:01,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-21 01:50:01,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 31 [2021-11-21 01:50:01,322 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-21 01:50:01,322 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 39 treesize of output 41 [2021-11-21 01:50:01,482 INFO L354 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2021-11-21 01:50:01,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 30 [2021-11-21 01:50:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:01,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:02,338 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int)) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0))) is different from false [2021-11-21 01:50:14,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3990 treesize of output 3894 [2021-11-21 01:50:14,954 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:50:14,954 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 2808 treesize of output 2807 [2021-11-21 01:50:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-21 01:50:15,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419347414] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [348133724] [2021-11-21 01:50:15,213 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-21 01:50:15,213 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:50:15,214 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:50:15,214 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:50:15,214 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:50:15,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:15,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:15,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:50:15,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:15,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:15,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:50:15,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:15,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:15,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:50:15,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:15,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:50:15,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:15,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:50:15,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:15,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:15,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-11-21 01:50:16,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:50:16,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:50:16,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:50:16,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:50:16,424 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 23 treesize of output 13 [2021-11-21 01:50:16,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 52 [2021-11-21 01:50:16,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:50:16,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:50:16,799 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 19 treesize of output 1 [2021-11-21 01:50:16,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:50:16,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:16,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:16,877 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 42 treesize of output 29 [2021-11-21 01:50:16,896 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 15 treesize of output 1 [2021-11-21 01:50:16,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:16,967 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:16,967 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 17 treesize of output 21 [2021-11-21 01:50:16,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 01:50:17,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:17,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:17,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:17,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:17,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:17,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2021-11-21 01:50:17,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:50:17,621 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 19 treesize of output 1 [2021-11-21 01:50:17,632 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 19 treesize of output 1 [2021-11-21 01:50:17,722 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 15 treesize of output 1 [2021-11-21 01:50:17,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:17,728 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 42 treesize of output 29 [2021-11-21 01:50:17,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:17,777 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:17,777 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 17 treesize of output 21 [2021-11-21 01:50:17,792 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 01:50:17,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:17,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:17,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:17,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:17,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:17,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2021-11-21 01:50:18,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:18,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:18,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:50:18,390 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 15 treesize of output 1 [2021-11-21 01:50:18,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:18,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:18,408 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 42 treesize of output 29 [2021-11-21 01:50:18,492 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:18,493 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 17 treesize of output 21 [2021-11-21 01:50:18,512 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 01:50:18,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:18,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:18,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:18,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2021-11-21 01:50:18,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:18,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:18,889 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 57 treesize of output 42 [2021-11-21 01:50:18,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 27 [2021-11-21 01:50:18,898 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 27 treesize of output 23 [2021-11-21 01:50:19,499 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:50:20,919 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:50:20,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:50:20,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2021-11-21 01:50:20,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706440492] [2021-11-21 01:50:20,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:50:20,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-21 01:50:20,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:20,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-21 01:50:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1872, Unknown=11, NotChecked=92, Total=2352 [2021-11-21 01:50:20,923 INFO L87 Difference]: Start difference. First operand 162 states and 205 transitions. Second operand has 32 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 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 01:50:21,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:21,474 INFO L93 Difference]: Finished difference Result 173 states and 213 transitions. [2021-11-21 01:50:21,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:50:21,475 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 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 01:50:21,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:21,476 INFO L225 Difference]: With dead ends: 173 [2021-11-21 01:50:21,476 INFO L226 Difference]: Without dead ends: 173 [2021-11-21 01:50:21,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=478, Invalid=2271, Unknown=11, NotChecked=102, Total=2862 [2021-11-21 01:50:21,479 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 240 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 415 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:21,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 434 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 517 Invalid, 0 Unknown, 415 Unchecked, 0.3s Time] [2021-11-21 01:50:21,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-21 01:50:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 160. [2021-11-21 01:50:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 144 states have (on average 1.3958333333333333) internal successors, (201), 159 states have internal predecessors, (201), 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 01:50:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2021-11-21 01:50:21,485 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 23 [2021-11-21 01:50:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:21,486 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2021-11-21 01:50:21,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 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 01:50:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2021-11-21 01:50:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 01:50:21,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:21,487 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:21,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:21,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 01:50:21,707 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:50:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1890371429, now seen corresponding path program 1 times [2021-11-21 01:50:21,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:21,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315876342] [2021-11-21 01:50:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:21,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:21,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:21,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315876342] [2021-11-21 01:50:21,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315876342] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:50:21,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756668578] [2021-11-21 01:50:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:21,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:21,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:21,862 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:50:21,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:50:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:21,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-21 01:50:21,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:22,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:50:22,041 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:50:22,041 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 01:50:22,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-21 01:50:22,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:22,091 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 27 treesize of output 11 [2021-11-21 01:50:22,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 8 [2021-11-21 01:50:22,192 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:50:22,192 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 23 treesize of output 22 [2021-11-21 01:50:22,295 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:50:22,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 14 [2021-11-21 01:50:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:22,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:24,287 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_126| Int)) (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) |v_ULTIMATE.start_main_~p~0#1.offset_126| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-11-21 01:50:29,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 117 treesize of output 113 [2021-11-21 01:50:30,949 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:50:30,949 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 24 treesize of output 23 [2021-11-21 01:50:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:31,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756668578] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:31,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [295044707] [2021-11-21 01:50:31,701 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-21 01:50:31,701 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:50:31,701 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:50:31,701 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:50:31,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:50:31,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:31,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:31,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:50:31,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:31,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:50:31,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:31,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:32,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:50:32,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:50:32,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:50:32,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-11-21 01:50:32,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:50:32,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:50:32,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:32,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:50:33,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:33,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:33,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:33,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 52 [2021-11-21 01:50:33,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:50:33,124 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 23 treesize of output 13 [2021-11-21 01:50:33,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:50:33,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:50:33,589 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 19 treesize of output 1 [2021-11-21 01:50:33,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:33,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:50:33,673 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 15 treesize of output 1 [2021-11-21 01:50:33,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:33,680 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 42 treesize of output 29 [2021-11-21 01:50:33,691 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 15 treesize of output 1 [2021-11-21 01:50:33,729 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:33,729 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 17 treesize of output 21 [2021-11-21 01:50:33,750 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 01:50:33,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:33,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:33,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:33,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2021-11-21 01:50:33,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:33,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:34,240 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 19 treesize of output 1 [2021-11-21 01:50:34,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:34,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:50:34,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:34,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:34,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:34,344 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 42 treesize of output 29 [2021-11-21 01:50:34,402 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:34,402 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 17 treesize of output 21 [2021-11-21 01:50:34,430 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 01:50:34,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:34,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:34,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:34,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2021-11-21 01:50:34,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:34,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:35,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:35,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:35,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:50:35,137 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 15 treesize of output 1 [2021-11-21 01:50:35,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:35,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:35,152 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 42 treesize of output 29 [2021-11-21 01:50:35,229 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:35,230 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 17 treesize of output 21 [2021-11-21 01:50:35,265 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 01:50:35,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:35,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:35,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:35,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:35,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2021-11-21 01:50:35,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:35,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2021-11-21 01:50:35,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 27 [2021-11-21 01:50:35,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 01:50:36,131 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:50:37,441 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:50:37,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:50:37,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2021-11-21 01:50:37,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226409583] [2021-11-21 01:50:37,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:50:37,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-21 01:50:37,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:37,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-21 01:50:37,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1323, Unknown=11, NotChecked=76, Total=1640 [2021-11-21 01:50:37,444 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 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 01:50:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:38,499 INFO L93 Difference]: Finished difference Result 247 states and 306 transitions. [2021-11-21 01:50:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:50:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 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 23 [2021-11-21 01:50:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:38,501 INFO L225 Difference]: With dead ends: 247 [2021-11-21 01:50:38,502 INFO L226 Difference]: Without dead ends: 247 [2021-11-21 01:50:38,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=309, Invalid=1753, Unknown=12, NotChecked=88, Total=2162 [2021-11-21 01:50:38,503 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 257 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 525 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:38,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 541 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 534 Invalid, 0 Unknown, 525 Unchecked, 0.3s Time] [2021-11-21 01:50:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-21 01:50:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 160. [2021-11-21 01:50:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 144 states have (on average 1.3888888888888888) internal successors, (200), 159 states have internal predecessors, (200), 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 01:50:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2021-11-21 01:50:38,509 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 23 [2021-11-21 01:50:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:38,509 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2021-11-21 01:50:38,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 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 01:50:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2021-11-21 01:50:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:50:38,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:38,511 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:38,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:38,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-21 01:50:38,738 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:50:38,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1456483316, now seen corresponding path program 1 times [2021-11-21 01:50:38,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:38,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845242406] [2021-11-21 01:50:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:38,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:38,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:38,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845242406] [2021-11-21 01:50:38,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845242406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:50:38,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079921561] [2021-11-21 01:50:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:38,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:38,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:38,970 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:50:38,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:50:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:39,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-21 01:50:39,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:39,175 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:39,176 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:50:39,229 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 23 treesize of output 19 [2021-11-21 01:50:39,339 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:50:39,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31 [2021-11-21 01:50:39,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 18 [2021-11-21 01:50:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:39,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:40,146 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 Int) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_5)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) 1)) is different from false [2021-11-21 01:50:44,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 222 treesize of output 210 [2021-11-21 01:50:45,977 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-21 01:50:45,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 88 [2021-11-21 01:50:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-21 01:50:46,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079921561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:46,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [729036883] [2021-11-21 01:50:46,097 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-21 01:50:46,097 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:50:46,098 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:50:46,098 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:50:46,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:50:46,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:50:46,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:50:46,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:46,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:46,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:50:46,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:50:46,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:50:46,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-11-21 01:50:46,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:50:46,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:50:46,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:46,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:50:47,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:50:47,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:50:47,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:50:47,217 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 23 treesize of output 13 [2021-11-21 01:50:47,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:47,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:47,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:47,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:47,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-21 01:50:47,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:50:47,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:47,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:47,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:47,739 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 21 treesize of output 20 [2021-11-21 01:50:47,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:47,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:47,810 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:50:47,810 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:50:47,850 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:47,850 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 17 treesize of output 21 [2021-11-21 01:50:48,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:48,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:48,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:48,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:48,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:48,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:50:48,334 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 22 treesize of output 18 [2021-11-21 01:50:48,364 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 19 treesize of output 1 [2021-11-21 01:50:48,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:48,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:48,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:48,492 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 21 treesize of output 20 [2021-11-21 01:50:48,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:50:48,530 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:48,531 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 17 treesize of output 21 [2021-11-21 01:50:48,552 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 01:50:48,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:48,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:48,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:48,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:48,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:50:48,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:49,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:49,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:50:49,151 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 22 treesize of output 18 [2021-11-21 01:50:49,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:49,266 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 21 treesize of output 20 [2021-11-21 01:50:49,275 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 15 treesize of output 1 [2021-11-21 01:50:49,283 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 15 treesize of output 1 [2021-11-21 01:50:49,334 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:50:49,334 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:50:49,386 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:50:49,387 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 17 treesize of output 21 [2021-11-21 01:50:49,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:49,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:49,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:50:49,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:50:49,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:49,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:50:49,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2021-11-21 01:50:49,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2021-11-21 01:50:49,721 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 38 treesize of output 23 [2021-11-21 01:50:53,908 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:50:55,742 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:50:55,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:50:55,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2021-11-21 01:50:55,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060175422] [2021-11-21 01:50:55,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:50:55,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 01:50:55,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:55,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 01:50:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1467, Unknown=4, NotChecked=80, Total=1806 [2021-11-21 01:50:55,744 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 25 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 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 01:50:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:56,311 INFO L93 Difference]: Finished difference Result 201 states and 234 transitions. [2021-11-21 01:50:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:50:56,311 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 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 01:50:56,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:56,313 INFO L225 Difference]: With dead ends: 201 [2021-11-21 01:50:56,313 INFO L226 Difference]: Without dead ends: 201 [2021-11-21 01:50:56,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=335, Invalid=1735, Unknown=4, NotChecked=88, Total=2162 [2021-11-21 01:50:56,315 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 476 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 407 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:56,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 430 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 573 Invalid, 0 Unknown, 407 Unchecked, 0.4s Time] [2021-11-21 01:50:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-21 01:50:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 160. [2021-11-21 01:50:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 144 states have (on average 1.3819444444444444) internal successors, (199), 159 states have internal predecessors, (199), 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 01:50:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2021-11-21 01:50:56,322 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 24 [2021-11-21 01:50:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:56,322 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2021-11-21 01:50:56,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 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 01:50:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2021-11-21 01:50:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:50:56,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:56,324 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:56,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:56,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:56,550 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:50:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1456483317, now seen corresponding path program 1 times [2021-11-21 01:50:56,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:56,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908161321] [2021-11-21 01:50:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:56,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:56,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908161321] [2021-11-21 01:50:56,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908161321] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:50:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966291495] [2021-11-21 01:50:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:56,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:56,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:56,719 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:50:56,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:50:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:56,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-21 01:50:56,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:56,990 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:50:56,990 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 01:50:56,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 01:50:57,087 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 23 treesize of output 19 [2021-11-21 01:50:57,101 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 13 treesize of output 9 [2021-11-21 01:50:57,313 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:50:57,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 63 [2021-11-21 01:50:57,331 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-21 01:50:57,331 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 70 treesize of output 40 [2021-11-21 01:50:57,504 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-21 01:50:57,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 58 treesize of output 43 [2021-11-21 01:50:57,511 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-21 01:50:57,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 [2021-11-21 01:50:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:57,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:06,614 WARN L227 SmtUtils]: Spent 6.94s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:51:08,304 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 Int) (v_DerPreprocessor_6 Int) (v_subst_2 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) v_subst_2 v_DerPreprocessor_7)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) v_subst_2 v_DerPreprocessor_6)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) (forall ((v_DerPreprocessor_7 Int) (v_subst_1 Int)) (<= 0 (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) v_subst_1 v_DerPreprocessor_7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))) is different from false [2021-11-21 01:51:08,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 206 treesize of output 194 [2021-11-21 01:51:08,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:08,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:08,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:08,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:08,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:08,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:08,611 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:51:08,611 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 24 treesize of output 23 [2021-11-21 01:51:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:08,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966291495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:51:08,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [885788036] [2021-11-21 01:51:08,671 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-21 01:51:08,671 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:51:08,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:51:08,672 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:51:08,672 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:51:08,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:08,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:08,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:51:08,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:08,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:51:08,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:08,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:09,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:51:09,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:51:09,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:51:09,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:51:09,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-11-21 01:51:09,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:51:09,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:51:09,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:09,905 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 23 treesize of output 13 [2021-11-21 01:51:09,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:09,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:51:09,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:09,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-21 01:51:10,242 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 22 treesize of output 18 [2021-11-21 01:51:10,250 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 19 treesize of output 1 [2021-11-21 01:51:10,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:51:10,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:10,352 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 21 treesize of output 20 [2021-11-21 01:51:10,364 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 15 treesize of output 1 [2021-11-21 01:51:10,379 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 15 treesize of output 1 [2021-11-21 01:51:10,422 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:51:10,422 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:51:10,467 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:10,467 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 17 treesize of output 21 [2021-11-21 01:51:10,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:10,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:10,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:10,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:10,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:51:10,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:10,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:51:11,013 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 22 treesize of output 18 [2021-11-21 01:51:11,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:51:11,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:51:11,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:51:11,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:11,139 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 21 treesize of output 20 [2021-11-21 01:51:11,196 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:51:11,197 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:51:11,239 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:11,239 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 17 treesize of output 21 [2021-11-21 01:51:11,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:11,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:11,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:11,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:51:11,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:11,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:11,829 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 19 treesize of output 1 [2021-11-21 01:51:11,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:51:11,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:51:11,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:51:11,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:51:11,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:11,974 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 21 treesize of output 20 [2021-11-21 01:51:12,014 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:51:12,014 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:51:12,051 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:12,051 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 17 treesize of output 21 [2021-11-21 01:51:12,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:12,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:12,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:12,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:12,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:12,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:51:12,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2021-11-21 01:51:12,445 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 42 treesize of output 38 [2021-11-21 01:51:12,449 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 38 treesize of output 23 [2021-11-21 01:51:16,755 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:51:18,745 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:51:18,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:51:18,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2021-11-21 01:51:18,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006648140] [2021-11-21 01:51:18,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:51:18,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 01:51:18,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 01:51:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1514, Unknown=2, NotChecked=80, Total=1806 [2021-11-21 01:51:18,748 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 01:51:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:19,140 INFO L93 Difference]: Finished difference Result 178 states and 216 transitions. [2021-11-21 01:51:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:51:19,140 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 01:51:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:19,142 INFO L225 Difference]: With dead ends: 178 [2021-11-21 01:51:19,142 INFO L226 Difference]: Without dead ends: 178 [2021-11-21 01:51:19,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=273, Invalid=1891, Unknown=2, NotChecked=90, Total=2256 [2021-11-21 01:51:19,145 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 115 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:19,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 357 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 284 Invalid, 0 Unknown, 325 Unchecked, 0.2s Time] [2021-11-21 01:51:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-21 01:51:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 156. [2021-11-21 01:51:19,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 143 states have (on average 1.3426573426573427) internal successors, (192), 155 states have internal predecessors, (192), 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 01:51:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2021-11-21 01:51:19,152 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 24 [2021-11-21 01:51:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:19,152 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 192 transitions. [2021-11-21 01:51:19,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 01:51:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 192 transitions. [2021-11-21 01:51:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:51:19,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:19,154 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:19,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:51:19,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:51:19,374 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:51:19,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:19,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1528030283, now seen corresponding path program 1 times [2021-11-21 01:51:19,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:19,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979588289] [2021-11-21 01:51:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:19,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:19,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:19,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979588289] [2021-11-21 01:51:19,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979588289] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:51:19,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152503631] [2021-11-21 01:51:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:19,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:51:19,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:51:19,587 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:51:19,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:51:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:19,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-21 01:51:19,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:51:19,819 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:51:19,819 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 01:51:19,825 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 01:51:19,889 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 13 treesize of output 9 [2021-11-21 01:51:19,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-21 01:51:20,014 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:51:20,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 63 [2021-11-21 01:51:20,026 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-21 01:51:20,026 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 70 treesize of output 40 [2021-11-21 01:51:20,258 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-21 01:51:20,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 58 treesize of output 43 [2021-11-21 01:51:20,267 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-21 01:51:20,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 [2021-11-21 01:51:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:20,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:20,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 336 treesize of output 324 [2021-11-21 01:51:20,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1112 treesize of output 1064 [2021-11-21 01:51:21,234 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:51:21,234 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 43 treesize of output 42 [2021-11-21 01:51:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:21,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152503631] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:51:21,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1449094974] [2021-11-21 01:51:21,358 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-21 01:51:21,358 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:51:21,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:51:21,358 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:51:21,358 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:51:21,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:21,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:21,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:51:21,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:21,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:21,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:51:21,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:21,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:21,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:51:21,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:21,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:51:21,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:21,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:51:22,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:51:22,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-11-21 01:51:22,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:51:22,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:51:22,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:22,547 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 23 treesize of output 13 [2021-11-21 01:51:22,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:22,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:51:22,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:22,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 52 [2021-11-21 01:51:23,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:51:23,057 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 22 treesize of output 18 [2021-11-21 01:51:23,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:51:23,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:51:23,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:23,170 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 42 treesize of output 29 [2021-11-21 01:51:23,185 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 15 treesize of output 1 [2021-11-21 01:51:23,225 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:51:23,225 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:51:23,272 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:23,273 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 17 treesize of output 21 [2021-11-21 01:51:23,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:23,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:23,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:23,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:23,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2021-11-21 01:51:23,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:23,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:51:23,895 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 19 treesize of output 1 [2021-11-21 01:51:23,921 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 22 treesize of output 18 [2021-11-21 01:51:23,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:23,991 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 42 treesize of output 29 [2021-11-21 01:51:24,001 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 15 treesize of output 1 [2021-11-21 01:51:24,008 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 15 treesize of output 1 [2021-11-21 01:51:24,044 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:51:24,044 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-21 01:51:24,082 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:24,082 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 17 treesize of output 21 [2021-11-21 01:51:24,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:24,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:24,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:24,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:24,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:24,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2021-11-21 01:51:24,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:51:24,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:51:24,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:51:24,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:24,672 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 42 treesize of output 29 [2021-11-21 01:51:24,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:51:24,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:51:24,777 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:24,777 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 17 treesize of output 21 [2021-11-21 01:51:24,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 01:51:24,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:24,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:24,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:24,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2021-11-21 01:51:24,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:24,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:25,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2021-11-21 01:51:25,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 27 [2021-11-21 01:51:25,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 01:51:29,248 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:51:31,103 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:51:31,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:51:31,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2021-11-21 01:51:31,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565948587] [2021-11-21 01:51:31,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:51:31,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 01:51:31,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:31,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 01:51:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1600, Unknown=0, NotChecked=0, Total=1806 [2021-11-21 01:51:31,107 INFO L87 Difference]: Start difference. First operand 156 states and 192 transitions. Second operand has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 01:51:31,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:31,736 INFO L93 Difference]: Finished difference Result 168 states and 202 transitions. [2021-11-21 01:51:31,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-21 01:51:31,737 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 01:51:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:31,738 INFO L225 Difference]: With dead ends: 168 [2021-11-21 01:51:31,738 INFO L226 Difference]: Without dead ends: 168 [2021-11-21 01:51:31,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=299, Invalid=2053, Unknown=0, NotChecked=0, Total=2352 [2021-11-21 01:51:31,740 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 130 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:31,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 394 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 525 Invalid, 0 Unknown, 170 Unchecked, 0.4s Time] [2021-11-21 01:51:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-21 01:51:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 156. [2021-11-21 01:51:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 143 states have (on average 1.3286713286713288) internal successors, (190), 155 states have internal predecessors, (190), 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 01:51:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 190 transitions. [2021-11-21 01:51:31,750 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 190 transitions. Word has length 24 [2021-11-21 01:51:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:31,750 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 190 transitions. [2021-11-21 01:51:31,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 01:51:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 190 transitions. [2021-11-21 01:51:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:51:31,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:31,754 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:31,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-21 01:51:31,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:51:31,974 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-21 01:51:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:31,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1199447872, now seen corresponding path program 1 times [2021-11-21 01:51:31,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:31,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522104353] [2021-11-21 01:51:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:31,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:32,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:32,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522104353] [2021-11-21 01:51:32,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522104353] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:51:32,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329309385] [2021-11-21 01:51:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:32,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:51:32,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:51:32,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:51:32,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a79b3-5b64-4f49-a1fc-bf7f53cfb8c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:51:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:32,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-21 01:51:32,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:51:32,316 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:51:32,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 11 [2021-11-21 01:51:32,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:51:32,475 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:51:32,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 38 [2021-11-21 01:51:32,647 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:51:32,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 30 [2021-11-21 01:51:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:32,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:33,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 99 treesize of output 93 [2021-11-21 01:51:33,316 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:51:33,316 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 26 [2021-11-21 01:51:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:33,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329309385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:51:33,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1488680033] [2021-11-21 01:51:33,364 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-21 01:51:33,364 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:51:33,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:51:33,364 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:51:33,365 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:51:33,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:33,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:33,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:51:33,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:33,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:51:33,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:33,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:51:33,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:33,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:51:33,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:33,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 01:51:33,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:33,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-21 01:51:33,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:33,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:51:34,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:51:34,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-11-21 01:51:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:51:34,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:34,394 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 23 treesize of output 13 [2021-11-21 01:51:34,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:34,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 01:51:34,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:34,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-21 01:51:35,037 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-21 01:51:35,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 16 [2021-11-21 01:51:35,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-11-21 01:51:35,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2021-11-21 01:51:35,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 62 [2021-11-21 01:51:35,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:51:35,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:51:35,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:35,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 01:51:36,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:51:36,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2021-11-21 01:51:36,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:36,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:51:38,520 INFO L354 Elim1Store]: treesize reduction 162, result has 12.0 percent of original size [2021-11-21 01:51:38,521 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 478 treesize of output 387 [2021-11-21 01:51:38,584 INFO L354 Elim1Store]: treesize reduction 186, result has 15.5 percent of original size [2021-11-21 01:51:38,585 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 459 treesize of output 431 [2021-11-21 01:51:38,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:38,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:38,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:38,764 INFO L354 Elim1Store]: treesize reduction 622, result has 10.8 percent of original size [2021-11-21 01:51:38,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 440 treesize of output 452 [2021-11-21 01:51:41,088 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-21 01:51:41,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 469 treesize of output 379 [2021-11-21 01:51:41,150 INFO L354 Elim1Store]: treesize reduction 168, result has 16.8 percent of original size [2021-11-21 01:51:41,150 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 454 treesize of output 430 [2021-11-21 01:51:41,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:41,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:41,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:41,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:41,324 INFO L354 Elim1Store]: treesize reduction 444, result has 13.5 percent of original size [2021-11-21 01:51:41,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 439 treesize of output 448 [2021-11-21 01:51:42,486 INFO L354 Elim1Store]: treesize reduction 246, result has 12.5 percent of original size [2021-11-21 01:51:42,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 454 treesize of output 461 [2021-11-21 01:51:45,799 INFO L354 Elim1Store]: treesize reduction 80, result has 22.3 percent of original size [2021-11-21 01:51:45,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 583 treesize of output 430 [2021-11-21 01:51:45,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:45,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:45,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:45,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:45,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:45,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:45,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:45,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:45,967 INFO L354 Elim1Store]: treesize reduction 500, result has 7.1 percent of original size [2021-11-21 01:51:45,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 532 treesize of output 519 [2021-11-21 01:51:46,080 INFO L354 Elim1Store]: treesize reduction 164, result has 18.8 percent of original size [2021-11-21 01:51:46,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 513 treesize of output 504 [2021-11-21 01:51:47,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:51:47,876 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-21 01:51:47,876 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 72 treesize of output 66 [2021-11-21 01:51:47,898 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-21 01:51:47,898 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 63 treesize of output 57 [2021-11-21 01:51:49,011 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:51:49,011 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 84 treesize of output 82 [2021-11-21 01:51:49,029 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:51:49,029 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 82 treesize of output 80 [2021-11-21 01:51:49,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:49,779 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 21 treesize of output 20 [2021-11-21 01:51:49,861 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 01:51:49,861 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 101 treesize of output 106 [2021-11-21 01:51:49,894 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 01:51:49,894 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 100 treesize of output 111 [2021-11-21 01:51:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:51,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:51,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:51,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:51:51,217 INFO L354 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2021-11-21 01:51:51,217 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 1 case distinctions, treesize of input 102 treesize of output 109 [2021-11-21 01:51:51,238 INFO L354 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2021-11-21 01:51:51,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 116 [2021-11-21 01:51:53,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2021-11-21 01:51:53,034 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 42 treesize of output 27 [2021-11-21 01:51:53,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 01:51:53,741 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-21 01:51:53,741 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 34 treesize of output 38 [2021-11-21 01:51:54,668 INFO L354 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2021-11-21 01:51:54,669 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 2 case distinctions, treesize of input 188 treesize of output 210 [2021-11-21 01:51:54,752 INFO L354 Elim1Store]: treesize reduction 64, result has 44.3 percent of original size [2021-11-21 01:51:54,753 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 210 treesize of output 229 [2021-11-21 01:51:54,820 INFO L354 Elim1Store]: treesize reduction 64, result has 44.3 percent of original size [2021-11-21 01:51:54,820 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 229 treesize of output 248 [2021-11-21 01:52:01,833 INFO L354 Elim1Store]: treesize reduction 52, result has 49.5 percent of original size [2021-11-21 01:52:01,833 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 208 treesize of output 231 [2021-11-21 01:52:01,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:52:01,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:52:01,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:52:01,892 INFO L354 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2021-11-21 01:52:01,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 252 [2021-11-21 01:52:01,942 INFO L354 Elim1Store]: treesize reduction 52, result has 49.5 percent of original size [2021-11-21 01:52:01,942 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 252 treesize of output 275 [2021-11-21 01:52:12,111 INFO L354 Elim1Store]: treesize reduction 104, result has 54.2 percent of original size [2021-11-21 01:52:12,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 233 treesize of output 342